Side by Side Comparison of: Evoluent vs J-Tech Digital

I have one of these at the office and another at home and love it. I experienced pain in my wrist and index finger for many years from constant mouse usage. While I wont say that this is a cure-all, my overall comfort level on a day to day basis has dramatically improved. I would recommend this mouse to anyone having repetitive stress pain from using a mouse. Takes a little getting used to the new grip, but after a few days it isn't a problem.

I'd definitely recommend this mouse, all though it does have some negative aspects which should be taken into considering. #1 the extreme height takes some getting used to. When moving my hand from the keyboard to the mouse, muscle memory from using shorter mouses for years has led to me accidentally knocking my Evoluent mouse off of the desk on numerous occasions. Thankfully, it's very sturdy, and the worst thing that happened was that one of the buttons got stuck after the fall. However, this is something that should be taken into consideration. My work space is relatively cramped, and the mouse is only a few inches from the keyboard, so it's been a frustrating thing to get used to. #2 it is simply not as easy to control. Although it almost instantly solved the hand pain I was experiencing, this is definitely not the appropriate tool to use if you have a lot of detail work to handle in photoshop, or are playing certain games. For general use purposes it's great, but for certain work I have to switch to a traditional mouse to get the level of control I need.

Mostly great. The physical design has been a boon to my well worn right wrist!However, there is one problem if you are running Windows 64 bit (x64).You need to turn off scrolling acceleration in the Evoluent mouse manager. Open the management software, click on the wheel tab and uncheck accelerated scrolling. If you don't do this, you may see the following error messages in the event log:Faulting application name: EvoMouseExec.exe, version: 4.0.1.0, time stamp: 0x501a2a06Faulting module name: EvoMouseExec.exe, version: 4.0.1.0, time stamp: 0x501a2a06Exception code: 0xc0000409Fault offset: 0x0000000000002b5dFaulting process id: 0x1420Faulting application start time: 0x01d150f3e312a03dFaulting application path: C:\Program Files\Evoluent\VMouse\V4\EvoMouseExec.exeFaulting module path: C:\Program Files\Evoluent\VMouse\V4\EvoMouseExec.exeReport Id: eb7201af-8f95-4b6d-8b8f-bc8dfdfd6500I'm running Windows 10 but I believe that the problem is common on 64 bit Windows versions after Windows 7. I'm not experiencing this problem on my work computer which is Windows 7 64 bit.This problem is not a deal breaker. The mouse works perfectly well with this setting off.

I had a wired model 4 for a few years and had no problems. Then it started double clicking now and then when I hit the single click button. I had wanted to get the wireless model 4 so went ahead and got it because I couldn't cure the double click problem. I have an iMac running El Capitan so I checked the instruction manual on set up. It said to delete the Evoluent application before connecting the new mouse, so it wouldn't interfere with new set up. So after deleting the application and connecting the new mouse it didn't work. I could move the cursor but that was it. No clicking, right clicking, scrolling, nothing. I reconnected the old wired model and had the same problem, nothing. So I called tech support and the tech had no idea on how to get it to work on my iMac. I had to dig up the original Apple mouse that came with it and was able to download the Evoluent application and waa laa .. the new mouse worked fine. I really like the Evoluent mouse.

I have both the left and right handed versions of this mouse, which I alternate use of depending on what I'm doing and which hand and/or shoulder is starting to bother me. The left-handed mouse I'm using is wired and the right-handed one is wireless. They work seamlessly together and are just awesome for anyone with carpal tunnel and/or other RSI. The battery life on the wireless right handed mouse is pretty good; I have had to change the battery once in about two years of daily use. For both mice I have the 'regular" size which feels just a bit small for me, but I'm very tall; about 6'3"!I recently also moved to a Type Heaven mechanical keyboard, also definitely recommended for people that have abused their wrists for far too many years with cheap mice and keyboards.My wife also have the right-handed "regular" size, and although her hand is much smaller she likes the fit of the mouse very well. As this mouse is more of a grip mouse or handshake mouse, I find that you don't have to worry about it being a bit big since I find I'm not having to pick it up much to drag it around the mousepad. The mouse does have a DPI adjustment, which allows for the mouse pointer to move slower or quicker around the screen; I mostly use it on either low or medium.Note that my wife just purchased a KVM and neither the wired nor wireless version of the mouse work correctly with the KVM. The problem is that that mouse pointer works fine left-to-right, but doesn't move up and down, only up, which ends up with the cursor moving around at the top of the screen. Other mice work fine with the same KVM so it isn't the KVM itself but the mouse in combination with the KVM (iogear). Evoluent has stated that their mice may not work with a KVM so this wasn't a huge shock to me and it is a bit of a specialty use.

I think this mouse is a great tool for anyone utilizing a computer for extended hours; whether it is at your desk, or on the go, this is a very comfortable mouse. I actually switch back and forth between this and my old Logitech ergo mouse because my body loves changing postures--one horizontal position and one vertical position.The mouse software is very customizable as well as user friendly...if you care to download it; the mouse works just fine without the software too. I installed on it Windows 8 with zero issues.In the beginning I had a problem with the scroll wheel. I changed the setting so many times with no luck. After months of procrastinating with the idea to contact customer support, I finally broke down and gave them a shout. They worked with me to resolve my issue with a few steps taken for troubleshooting. After concluding that the mouse was defective, I was instructed to destroy the product and email them a picture of it trashed--this was very humorous and smart from a business stance I thought. Two days later, I had my new mouse...it works perfectly.They always kept in contact with me via email, with a very short response time. Beyond that, there is a 2 year warranty that lives up to Evoluent's reputation.

I went looking for a vertical mouse after experiencing increasingly severe wrist/shoulder/neck pain from computer work. I picked up this one along with a similar one from Anker, since I wasn't sure what shape would work better for me. The J-Tech ended up being the clear winner for me and is now my daily driver at work. The Anker one is now at home, since it's still better than a regular mouse; but I like it less than the J-Tech on just about every level. The Anker's buttons feel harder to press (putting more stress on my hand and wrist), and their locations feel less natural to me compared to the J-Tech (especially the back/forward buttons). The scroll wheel on the J-Tech feels better and more responsive, and the design puts my wrist in a more neutral position than the Anker. The dpi button is easy to access but hard to hit accidentally. I don’t know if I looove the ridged surface of the rubbery bits, but it doesn’t actively bother me and I mostly don’t notice it.

I did follow the tips here to remove the weights inside the mouse, but I’ve kept the little wrist pad attached since I’ve found it to be more comfortable for me. My wrist and shoulder pain hasn’t completely gone away, but it’s much improved, and I immediately notice the difference if I have to use a regular mouse for any period. Also, don't be discouraged if for the first day or two, you feel like you can't do anything with this mouse! It definitely took me a few (frustrating and slow!) days to get used to it, but then after that it's no problem.

I would definitely purchase this again, and may end up getting a second one to replace the Anker at home anyway.

This mouse is amazing.

I had been having some carpal tunnel issues for several years; I work about 11 hours a day in front of the computer, then go home and relax on the computer every evening. I spend the majority of my waking hours staring at a screen, mouse in hand. Accordingly, I started to develop some serious problems using my mouse after a few hours every day. It started off as a minor pain, but eventually it became a persistent pain. Something had to change.

I found out that Vertical Mice could alleviate the problem; I was skeptical -- VERY skeptical -- but I decided to give it a try. I ordered the Wired version of the mouse, since it was the cheaper one.

The day I recieved it, after using it for about two hours, I immediately ordered two more; One for the office, one for my wife. This time, I chose the wireless ones. I absolutely love it.

Without changing anything but my mouse, my carpal tunnel pain is COMPLETELY GONE. The graphics showing your two forearm bones twisting with traditional mouse use are accurate; Vertical mouse use prevents this problem and I'm not sure I can ever go back. I decided to leave a review after my brother-in-law that lives with me asked me to order him one as well.

This mouse is cheap, but well built. We don't use the removable palm rest, although it was one of the reasons I chose this model; I've found I'm slightly more accurate and have to move the mouse even less when I don't have the rest on. The scrolling is precise, the two thumb buttons are placed with enough space to rest your thumb in between them without hitting them, and the two main mouse buttons have a really nice springy action towards the tips of the buttons that's somewhat hard to describe.

If you have RSI or carpal tunnel, GET THIS MOUSE OR THE WIRELESS VERSION; It will change your life!

I have been used to working with ergonomic peripherals at my workplace and wanted to get one for my home system as well. But at the same time, I was not looking to spend a lot of money. Going by all the reviews posted, I ordered this mouse to give it a try.
The mouse arrived well in time and in a nice packaging. As per one of the reviews listed, it was claimed to be a heavy mouse but I did not felt that it was heavy. In fact it just appears to be the correct weight while using. Especially when compared to the other ergonomic mice that I have been using, this one seemed to be having the the correct weight, if not the perfect one.
Coming to the usage, the most important aspect, I have been using it for almost a week now and am happy with the performance. While it does what it is supposed to do - being an ergonomic mouse, it definitely has a learning curve to it. But once I got used to it, it is really comfortable to use, even with prolonged sittings.
The mouse runs on two AAA batteries - a pair comes with the mouse within the packaging - a really nice thing to allow you to get going immediately. The mouse gets detected immediately when plugged in, no specialized drivers or installations required.
Overall I am really satisfied with the purchase and would definitely recommend this mouse, if you are looking for one on budget.

As a software developer, I am semi-permanently attached to a mouse and keyboard. After more than twenty years in the industry, my wrists and digits have taken the brunt of the storm. Until recently, the worst of my work-related pains has been on my thumb from the way it rests on most mice. It locked and popped non-stop, and was miserable by the end of the day.

The reason that most of that is in past tense is due to this mouse. After trying numerous ergonomic mice and other pointing devices, I decided to try a vertical mouse. My searches landed me on this product, and the reviews were encouraging. It was packaged as would be expected, and I was up and running with the mouse in a matter of minutes. However, you do have to learn to walk before you can run. There is a learning curve, which comes as no surprise. It is just so very different than a traditional mouse, that you will find yourself wanting to hold it in awkward positions.

After a few days, though, it starts to become more natural. Three weeks in, and I could not be happier. While it does take some getting used to, I can honestly say that the pain in my thumb has been reduced by at least 75%. So, I have bought a second one for my mobile workstation, and my wife's interest is piqued to the point that I imagine that I will be ordering another one soon.

I have a history of elbow/wrist/hand pain in my mousing arm from a career of pointing and clicking on things. At work they prescribed me an Evoluent Vertical mouse which helped considerably. I bought this for home usage when I realised I was leaning to the left at home to try to simulate the same vertical mouse feeling on my home computer. If you haven't tried a vertical mouse you should, even before you start feeling pain. The over-pronated wrist position of normal mice crosses your radius and ulna which compresses all kinds of internal structures and it's not good for you in the long run. Using a vertical mouse takes a few days to get used to but it's worth it. As an added bonus, it used to annoy any of my colleagues who tried hi-jacking my ergo-mouse/keyboard to show me something at my desk... After a few clumsy attempts to click on things they'd always give up and return it to me ASAP.

So far I like it a lot. I also tried the Sharkk/Adesso vertical mouse at a shop. I like all four mice but so far I like this one the most. I have the wired version for my desktop.

Texture: My Evoluent mouse had a shiny slick texture that never felt that good in the hand and would collect a lot of fingerprint gunkage. This had a matte rubbery feeling surface with grip ridges. The Sharkk/Adesso mouse looked identical but the Adesso had the shiny smooth surface and the Sharkk was matte. I preferred the Sharkk to the Adesso FWIW.

Shape: This mouse has a more naturally curved hand shape that feels very natural in my hand. The Evoluent mouse was a simpler lump of rounded plastic. It's a better orientation than a regular mouse but it's not a great shape. I also like the wrist guard on this one - with my evoluent mouse, my palm heel always drags and get sore after a while.

Buttons: The buttons on this one feel much more solid and better placed under *my* fingers than any of the other three I've tried. The evoluent buttons always seemed too big and too long for my hands which meant harder actuation. The Sharkk/Adesso ones seemed OK but were more like long leaf style buttons than actual buttons and lacked feel. Some people have complained about the positioning of the thumb buttons on the J-Tech - I haven't had any trouble with them thus far but I remapped them with xmouse (no drivers are included). I guess you could disable them if they annoyed you. The thumb buttons on the Evoluent mouse are quite far apart - so far apart I never used them. The DPI button is large and better placed than the DPI button on the Evoluent mouse (under the palm?). Unlike the Evoluent mouse however, it doesn't have an up/down DPI button and it does it silently - it doesn't have LED indicators to tell what speed it's on. It just does it.

Size: The Evoluent mouse might work better for bigger hands - I believe they have wider range of sizes and left-handed models. I'm 5'6" and male FWIW. The J-Tech mouse works well for me but I can imagine someone with bigger hands finding it too small. I'm considering the Sharkk/Adesso mouse for my laptop since it seems a little more compact than either of the other two options.

Overall the J-Tech mouse is my favorite vertical mouse of the four I've tried, at least in the hand. I haven't tried the Adesso/Sharkk mice but I'd be willing to try them for mobile work, sacrificing the wrist guard and better shape for more portability. I'm not a fan of the Evoluent mouse at all any more. It's better than a normal mouse but it doesn't seem worth the extra money on ergonomics or longevity (I'm on my second: one burned out in under a year). Lefties and giant ham hands might need to check them out though.

I've been a big fan of Evoluent since I tried my first mouse from them. Same design, but corded. I took a star off, because frankly the wireless version's weight difference is a strong thing to consider. It took me at least 2 weeks to adjust to the wired version. It's taken me longer to adjust to the wireless version and the only thing I can tell is different is the weight. At any rate, this is a major relief of the pain of my carpal tunnel pain and frankly, I cannot live without this mouse.I have tried the newer version, but it just did not work for me. I really wanted it to also. If you have not tried an Evoluent mouse, try the new version first, and give it time. Really, it takes time to adjust. If you have the original version and want another mouse or go to cordless, stick with the tried an true.

So it's a little weird at first, but didn't take long at all to get used to. It's rather bulky. Maybe I should have got the smaller one, but I measured my hand and it was 7" so following the manufacturer's suggestion, I got the larger one. There are 3 buttons and I'm not sure why because most mouses have only 2 and what more do you need? I downloaded the driver program to be able to reprogram the buttons, and did so successfully, but after only a day or so, they reverted back to their original configuration all on their own. Go figure? As for my carpel tunnel being relieved... well yes it's a better option to be sure, but I still get really fatigued if I use it for a long time. Being able to rest your arm is great, but you have to make sure your set up overall is right - meaning it's not just the mouse that matters, but your chair, armrest, wrist rest, etc. I found the wrist rest to be especially important with this mouse since it sits higher off the mouse pad than a normal mouse. Again - I think if the bulk were reduced, and a simple 2 button system were put in place, this would be great and much easier on the hands and wrists than a normal mouse. All in all, I think we all need to get off our computers more and that would help avoid carpel tunnel altogether... as I sit here writing this review.... ouch!

I have wrist pain. Even though I am seeing the doctor I wanted to give a try to this mouse.I regularly use a wireless HP mouse over a surface with a bit of a slope to reduce the tension on my wrist, that has helped a bit. I thought this mouse would help with the pain and I might be able to use on the same way I use the HP one.Well, after 3-5 seconds of using it the pain was back and intense, and I detected pain on some other places: the part of the wrist that touches the table, the opposite side of the wrist, the pinky finger that lies on the bottom "lid" of the mouse, and the thumb (similar to the tension when holding a hair between the tip of the thumb and index finger).I might need to have some rest from the computer for a while, I will give it a try again after that.Related to other functionality: it works great, haven't tested for gaming but it seems not to have delay on the signal, it works fine on most surfaces (even on the couch), there's no visible light coming from the optical part, the pointer speed button is very convenient and works fine. Works out of the box with box Mac and PC, and some of the extra buttons have extra functionality on Windows (7) without need of any drivers (like, you can open links in new tabs). Auto scrolling works with Mac as well, which was a bit unexpected.My wife, who doesn't spend that much time at the computer, says is a good mouse, comfortable for her and responsive. Yet, I bought it for my wrist pain and it didn't help.Update: each time I use this mouse I feel pain in my wrist, after 1 sec of holding it. My wife loves it though.

I have used the v3, but finally needed a replacement. The v3 stopped working. I was so hooked I had to get a new one before my replacement, under warranty arrived. I have had wrist fractures and never knew my other "ergonomic" mice were not helping. A colleague recommended the Evoluent and I was surprised how my wrist felt better after a long day of graphics and CAD work. The v4 has extra buttons. I like the easy reach buttons above and below the thumb. I program these for forward and back functions. The three side buttons are good for click and right click. I use the lower button for right click and the middle button for program specific shortcuts. There is a slow scroll function that is limited to certain programs, but I never use it. The wheel works as usual.The interface allows custom functions and even some combo functions. Amazingly it also integrates with logitech so I can access my SetPoint settings in another tab. Some users may have to uninstall SetPoint, install Evoluent, the reinstall setpoint if there are issues with logitech devices.Customer service is responsive. Sometimes slow, but they are thorough. You may have to jump thru hoops or try a few solutions but they will eventually help you solve issues or replace an under warranty item. My v# mysteriously stopped, but they replaced it. My v4 receiver stopped working, but they sent a new one and helped me connect my v4 with it.My only complaint is the thumb grip on the v4. Why did they change this to a slick, sticky faux chrome piece???? This makes no sense. The black sides have a good grip. The blue buttons are fine.The thumb area on the v3 had a good grip. The v4 has an awful, slick, sticky faux chrome grip that is annoying after a long day. Please, Please, Please change this to a grippable surface in your next version. This is the most important area of the mouse for grip and navigation.It needs to be comfortable and grippy, not slick and sticky.

I really like this mouse. It fits my hand well and is highly functional. However, it's now starting to behave inconsistently. I can't get it to select a space between words in any word processing application, even this text box. It will select either the whole word or the entire paragraph. It is like the top button is performing a double click even though it's set for left clicking. It started out misbehaving infrequently and now it's all the time. It's causing a significant drop in my writing productivity.I had a similar problem about 6 months ago where the second button, set for right click, started acting like the third button and going to a navigation function. I have unloaded and reloaded drivers, reset buttons. I can't seem to control what the mouse does. It's like the light switch in the garage that you never knew what it turned on and across the street the neighbor's porch light keeps going on and off and she doesn't know why. So, are you reprogramming my mouse???!!!!!

I've owned the Evoluent VerticalMouse 4 Wireless for nearly a year. It is a great replacement over the standard overhand grip mouse, and has eased a lot of pain in my hand. It's not the cure-all, but I think it has reduced pain for me by roughly 50%. I work in the office at the computer all day, and I play on my computer a lot when I get home, so an ergonomic mouse is a must for me.Here are some tips if you decide to make this investment:The battery runs out around every 5 months. The indicator light actually didn't work but the mouse was lagging on the screen - super annoying. Just remember to keep some AA around and replace when you think the mouse is acting weird.Just this week, my programmable buttons stopped working. I assign double-click to the big button and it just turned itself into right-click. I uninstalled and reinstalled the drivers, but still didn't work. Finally, I decided to uninstall the drivers and remove all remnants of the Evoluent software from the Windows 7 registry and from any folders. Rebooted my computer and re-installed the drivers, and Voila, it's working again. Instructions on how to uninstall from the registry is on the Evoluent website.Overall I definitely recommend this mouse - make sure you download the drivers from the Evoluent website so you can fully program all the buttons.

I've been using this wired mouse for about a week now. After having aches and pains while at work in my hand and arm prior to purchasing this, I can honestly say these symptoms disappeared after a day or two of using this mouse.

I have a small hand and while I do wish this was slightly smaller, overall, I'm very pleased with the way it works. I like the way my hand doesn't have to twist to rest on it and it has a soft rubber grip area where the side of your hand rests on it while using it. This rest is removable, too, but I don't know why you'd want to remove it.

My only complaint is that while the rubber grip has ribs on it, it is still a bit too slippery at times and my hand slides down if I'm not paying attention. I don't have sweaty hands and have dry skin, so that probably doesn't help, either. It's not too much of an annoyance, but i do wish the rubber wasn't so smooth.

Other than that I'd say this product is high quality and I've already recommended it to my son and he purchased one last week for himself as he's a computer programmer and works on the computer for up to 12 hours a day. Also, you really can't beat the price as some of the vertical mouse products are upwards of $50.

Obviously these kinds of mice is always a compromise, however after trying several similar devices this one worked the best for wrist pain, just wished it was little larger.I definitely recommend this to everyone with wrist pain problems.

Having said that, this mouse have weird problem of being *heavy*. They did this on purpose, I dont know why - probably to "feel" more expensive. Inside, they have two additional weights (see photo), which add noticeable strain on wrist. Also, sometimes you need to pull the mouse up, and it is very hard to do, so you accidentally press those additional buttons on the left side and your browser page disappears - all because they added these two bricks inside

Good news is this is fixable, just open up the mouse (two additional screws sit hidden under two "sliders"), there should be 4 screws total - remove bricks and enjoy

UPDATE 2, after 10 months.

Mouse wheel started to fail, I disassembled it again and checked it. It turns out it actually *DESIGNED TO FAIL* with the time: rubber "tire" will lose traction with the plastic wheel, supporting it. Good news is - this is fixable too, if you "loosen" stopper that holds the wheel. As the result, mouse wheel will start working again, but you wont hear the click anymore (I still dont understand why they needed it in the first place). So now mouse is working great now.

Overall it is crazy that customers have to remove stuff from products to make them work better ...

The mouse feels good in my hand and helps reduce my wrist tingling. The sensitivity of the movement of the cursor is accurate. My only peeve is the same one others have pointed out. The buttons by the right thumb are too easy to click. The bottom button is the one I click most often and this is the page back button. Meaning, while I'm in a web page if my thumb hits that button, it's like hitting the back button. I lose whatever I'm doing in that page and goes to the previous web page. This is a known issue with this device but the developers don't think it's a problem. There should be a way to set up the buttons or turn them off, which is what I would prefer. For the price, this is a well made device but the developers should listen to their customers and fix the thumb buttons.

3 stars or 4. Hmmm. I'm confused by this mouse. I have severe shoulder, neck, wrist and finger pain in both hands, and have been forced to more often use my left hand (i'm a righty) just to give the right a break. So I'd prefer to have a lefty option, but that is not available. The major problem i have with regular mice is that my little end fingers try to clutch the mouse to stay in control of it. And mice have gotten so tiny these days that there is too little to grab. I am a woman with a small hand. I think this mouse is made for my size, and seems like it would be difficult for people with larger hands to use comfortably.

As a right handed mouse it doesn't seem to orient to my hand right. If I put the mouse in my hand as shown in the pictures - with my thumb firmly over the thumb area and fingers set about where the buttons are, I have to twist my wrist backwards in order for North South East West to be correct (like move the cursor correctly up, down, left, right). Picture pointing thumb straight out so that it makes a straight line down your arm. Then fingers to backwards to wrap around. That puts a lot of stress on my shoulder and strains through the back of my fingers.

If I rotate the mouse so it's not in exactly the right position on my hand but is in the right place North-South-East-West wise, it sits comfortably under my fingers BUT I can't scroll because the bar is basically where a ring on my middle finger would sit (because it's rotated 45 degrees). Far too low to move my finger to scroll.

If I can find a way to reorient the directional, this mouse would have a lot of potential. It would be a much better mouse and a much more natural position if the pointy end was set to NorthWest instead of due North.

Accuracy wise it seems very good. It's precise, and doesn't skip around like some cheap mice. It auto-detected really fast on both PCs and worked right off the bat. I'm not sure the dpi button is doing anything (on my other mouse it makes the cursor very slow, but I don't see a noticeable difference here). On the mousepad it moves fairly freely, but with just enough friction to allow you to stay in control.

I haven't had it long enough to say if it will help with my pain. I wasn't expecting much out of this, so I'm pleasantly surprised so far.

Keep in mind that with any mouse of any type, if you want any precision you need to steady part of your arm and hand on the desk while mousing. On this mouse your hand sits on the mouse, so for precision I have to lean my forearm or edge of my hand onto the mousepad.

I think this has potential. Worth a try if you have pain.

I have tried Anker and a few other vertical mice.. All of them are horrible compared to J-Tech.
But even J-Tech's has not reached perfection.

Pros:
--excellent button placement! not as hard to click as Anker's
--excellent removable rest pad
--great verticalness--even MORE vertical than Anker. holding position feels like you are grabbing a glass of lemonade

Cons:
--scroll wheel doesnt have a click.. it has an inconsistent texture when scrolling. slightly bothersome when scrolling a lot
--i'd like to be able to remap the dpi button... the past 3 mice ive bought have all had a remapping software with full-fledged macro. but they were not vertical of course.
--it feels a little uncomfortable but i do not feel ANY wrist strain. Despite the comfort, I KNOW that it is good in the long-term to get used to holding the mouse like this.

I can honestly tell you after Anker and cheap $10 vertical mice... this is the best mouse out there right now!

I've been using this mouse since December of 2015 on a Windows 10 workstation. I'm a software developer and often use the mouse 10+ hours each day. After using it for over 4 months I have some observations.Pros:It's comfortable. I like the angle much better than a standard mouse and it's good for power users.The software has a lot of options.Cons:The mouse can be extremely finicky about the surface. I currently use a pad of paper as a mouse pad-a standard mouse pad is too "reflective". It causes the cursor to do odd things such as suddenly jump to the far left monitor.The bottom right button is useless. Since the mouse can't be used on a slick surface, the bottom right button gets accidently pressed a lot when the mouse is moved. I have to keep it disabled so I don't accidently click it while moving.Even on a non-reflective surface the cursor occasionally does odd things. I can hover over something, it highlights, but it occasionally takes 3 or 4 mouse clicks to actually click it. This doesn't happen with a regular mouse, so it's a problem with this one.Battery life is abysmal. As a power user the single battery lasts a week or two at most. The low battery indicator (a small blinking light on the mouse) can be very hard to notice.

I have had this wireless mouse only 40 days/minimal usage and the USB receiver has come apart. I was able to slide the pieces back together, but I now understand why the performance has been spotty. It worked great at first, and the ergonomics felt well thought out, but I have to give it only 3 stars due to the fact that it is no longer usable, and I will have to order a new one to get the replacement USB. Unsure if this is just a quality fluke or true issue. USB was inserted/removed maybe 4 times/not constant or undue wear.

Works as promised and I love the ability to program the different keys and having 3 buttons instead of two. Personally, I could not get used to the vertical position and it was awkward getting used to the click motion. I found my pinkey would fall asleep during periods of prolonged use. Operation is very smooth and easy to program. For the price, it's very light and gives the impression it's not that well made. Even with the wide base, I frequently knocked it over, or would move it inadvertently. If you have wrist issues, I would certainly give it a try as the issues I have with it are personal, and subjective.

I got this to help with some RSI that I have been getting in my wrist and fingers. I also got the Anker at the same time. I personally liked the Anker better. The Evoluent sits straight up and the Anker is tilted slightly so my hands sits on it a little better. The Evoluent is very high quality. Also, it felt a little large for my hand. The Anker is smaller. I think it might be a preference thing. Get both and try them.

Bought this for my boyfriend for christmas and the laser was really laggy and inaccurate. His work mouse is the same thing but older and it has a different laser and works great, but this one had a laser made by a different company and it is noticeably worse. I feel like this mouse would be fine for most users but my boyfriend needed an very accurate mouse so if your looking for something high quality I wouldn't choose this mouse.

I have been using this mouse for two days . .still not sure if I shouldn't return it. Based on prior reviews, I was worried about connectivity and installation, but I had no problem. Installed with no issues (Windows 7). No connectivity issues. I use it on a wood desk without mouse pad. The programmable buttons are great. I was having a lot of wrist and shoulder pain and it is helpful in alleviating it, but not quite as much as I'd hoped. that may take time. My issue is that precision is really lacking. You want the cursor in a particular spot -- it may take you a couple of tries (compared with my old mouse where that was never an issue). Right now, I am using it for basic word processing and web surfing. I had hoped to use it for photo editing. It is barely adequate for my work/office use -- I am only putting up with it because of the decrease in pain but keep my other mouse available for when the lack of precision gets too bothersome. I think it will be useless for the detailed photo editing I'd hope to use it for and will keep looking for another alternative. I also wish the batteries were rechargeable like my other mouse, but that is a small point.

I really wanted to like this mouse, but it just doesn't work for what I need. I mainly wanted an ergonomic mouse for gaming because using a regular mouse makes my hand sore after a while. The problem with this mouse is that it's just not accurate enough and it's harder to move it quickly, which is really important for gaming. You just don't have the same range of motion with this mouse as you have with a traditional mouse. I also found that while this mouse was more comfortable for my hand, it was uncomfortable in other ways, particularly in how my forearm rests on the edge of the desk. When using a traditional mouse the fleshy under portion of your forearm rests on the desk. With this mouse your arm is in a "hand shake" position, so the bony part of the right side of your forearm rests against the desk. I had to put a wrist pad under my forearm for comfort, but this restricted my movement even more. I think this mouse would be fine for normal computer activities, but it doesn't cut it for gaming.

If I could figure out a way to disable the forward and backward buttons on the thumb side I would give it 4 stars. I don't know that the shape is great, it's just different, and when it comes to repetitive motion injuries (like carpal tunnel syndrome) different is useful. What kills me is when I'm entering data on a form and grab the mouse and accidentally hit the back button. BOOM! All data gone. Start over. Grrrrr.

It only took a short adjustment period to get used to it (other than the forward and back buttons under the thumb). I haven't gotten the DPI button on top to work, but I haven't put serious effort into it. It's ok, but if it died I would replace it with something else.

The first mouse I got the red laser in the base was very, very weak. I had to look carefully inside the laser window on the bottom of the mouse very closely to see that it is barely red.

The mouse was having issues losing communications between the surface of the mouse pad and the laser.

It's a good physical product execution as far as ergonomics go, I can already feel some relief from what was becoming a carpel tunnel issues that was exacerbating weight lifter's elbow. Having the hand in the "handshake", neutral position relieves the constant small amount of tension in the forearm extensor muscles associated with the prone hand position over a mouse.

Nathan at customer service responded to my review here promptly and sent me another mouse, it seems to be working well, and most noticeable, the mouse glides over the mousepad much easier than the first one.

It's a good mouse, but, the position of the thumb, especially for a normal sized male hand is directly between two buttons above the thumb which are the back and forward buttons for the mouse.

When you are working in a smaller mousepad area, (like most workplace situations), and where you are working with multiple screens especially, (like many workplace situations), one must lift the mouse to get full functionality across the screen, and when you lift this mouse the thumb can easily hit the back and forward buttons which is quite frustrating.

An applet should be written to disable these mouse buttons. The mouse is rather heavy, so considerably more force, (although still little force), must be exterted on the mouse to squeeze it so the thumb does not ride up into the back/forward buttons and activate them. This is a tension creation point. If you use the mouse with a completely relaxed hand, your thumb is going to hit those buttons, at least every now and them.

The whole point of an ergonomic mouse is to minimize any clenching or holding of the mouse while operating the mouse so the thumb buttons that are so close to the thumb, and because the thumb must be used to lift the mouse up, that's a subtraction of a star for me. The first mouse being defective is a subtraction as well, so three stars is fair.

I really like the ergonomic design, the handshake position, and the added texturing on the mouse does assist with lifting, but again, the thumb is just too close to the buttons that the thumb can so easily contact when lifting the mouse.

One plus for the design over the other vertical mice is the added palm rest that slides over the mouse surface.

I think there is a period of time in which this mouse must be used to simply develop the muscles and fine dexterity required for the new orientation and I may raise the stars to four if I can get more and more accustomed to the design. But the thumb buttons are still a big issue. Remember, it's a mouse that is supposed to be much, much, much more comfortable to operate than a standard mouse, so the thumb buttons really do hurt the design.

I bought this mouse because I already owned the Anker vertical mouse (2nd edition), but I wanted to see if there were more ergonomic vertical mice on the market. While I like the design paradigm of this mouse better than the Anker mouse, the Anker mouse somehow accomodates for the size of my hand better than this one does (even though the Anker mouse is smaller).

My hand rests on the buttons of this mouse so that the buttons are underneath the knuckle closest to my fingertips, rather than my fingertips themselves. Also, my pinky gets squashed into the rest of my other fingers by the lip on the bottom of the device. The Anker vertical mouse provides more space for my pinky because it doesn't have a lip on the bottom. The Anker mouse's large buttons also accomodate for a range of finger lengths better than this mouse's smaller buttons. Because this mouse is designed for a smaller hand than mine, using it is awkward (and will probably be painful if I use it often enough).

My hand is 7" from base-of-palm to fingertip.

UPDATE 9-14-16: The shape of this mouse is so perfect that I bought a second one, but after using them all day every day for less than a month, I found the switches did not really hold up well. It became harder and harder to get a solid click with a light press. It developed a two-stage click feeling, and when pressing lightly I could feel a click, but that click did nothing. Pressing harder worked fine most of the time, but for me to feel like I was guaranteed a real click, I ended up having to press carefully, at a specific angle, with a very solid press of the finger. And the click did not feel right. It was manageable given how much better my wrist was, but then I got an Anker vertical mouse and the buttons were so amazing that I switched to that. However, I modified the Anker because the shape is not nearly as good. I added a 1/2-inch foam pad to make it wide enough (this helps keep the correct wrist angle). I think this mouse might be fine for people who do not do as much mouse work as I do, and maybe I just got some from a bad batch, so I don't think this is a "bad" mouse it just seems like it would be amazing if the switches were better.

ORIGINAL REVIEW (was 5 stars out of the box):

Great mouse! My wrist is MUCH better!!

I've only been using a few days but I really like this mouse now that I followed Novosib's modification (March 5, 2016) for removing the weights. I also removed the optional palm rest. Without the weights and palm rest, I can make much smaller hand movements and have much better accuracy and speed. I can also pick up the mouse more easily to reposition it.

The problem before was accuracy and speed of positioning the cursor perfectly. I have three 1920x1200 monitors so I need a fast mouse speed setting to move across all that screen real estate, but then I need to put the cursor EXACTLY where I want it once I get there (graphic/web design work).

I think I will become just as fast with this mouse as I am with my regular mouse. I'll try to come back and let everyone know.

NOTE: Since Novosib's review they may have added the optional palm rest, so you need to remove that to see all four screws he talks about. Once you remove the palm rest (just gently pull it straight back) you will find two screws under it. The other two are under the larger stick-on sliders.

I love it without the palm rest and the weights! I'll be buying more of these for sure!

I bought my original version of this mouse 3 years ago, and then recently purchased this as a replacement after the old one died. I loved the old mouse and this one is terrible by comparison. The scroll wheel is loud, which I could deal with, but my real complaint is that the mouse doesn't always track smoothly and freezes on my screen when my computer is processing. This did not happen to my old version of the same mouse. I love the ergonomics of this mouse but the lack of precision is driving my crazy. What happened?

The mouse has a comfortable hand position and lots of extra programmable buttons which could be handy. Unfortunately, the mouse has other ergonomic problems for me. I have a lot of screen area, so to move the cursor all the way across the screen I have to pan to the side, pick the mouse up and move it back, then put it down and pan more. This mouse is hard plastic without any "grippy" rubber feel to it, and coupled with the ergonomic shape, it's not possible to pan in this manner. Another issue, though somewhat minor, is that the mouse is light and quite cheap feeling compared to my MS natural mouse. Lastly, the battery compartment cover seems like an afterthought and is quite difficult to remove.

I would give this product 1 star if I didn't love the feel of it so much. It has eased my arm pain considerably. I have fairly large hands an it's the only mouse I've used that feels comfortable. I've bought 2 of these in the past 4 years and they've both failed in the same way. In under 2 years of usage the left mouse button starts to double (or even triple) click with a single click. This is infuriating when you're trying to use the mouse for work or gaming. If this were a $20 mouse I wouldn't care, I'd just buy another, but spending $50+ a year on a mouse is too much for me. I tried other solutions after the first broke and found the other vertical mice uncomfortable. I will try this brand again if a new version comes out. If you're looking for a comfortable vertical mouse and have money to burn buy this, otherwise stay away.

The good: I've only been using it for about a week now and the parts of my wrist that were hurting are no longer bothering me. The buttons are placed well, easily accessible and easily programmed using Evoluent's driver.The bad: The programmable buttons function on whatever window the cursor is currently over, not necessarily the program you are currently using. I've spoken with Evoluent's tech support and they are aware of this issue. Their current driver (v5.5) has this issue and they do not expect it to be fixed in their upcoming release for Windows 10. I have never had this problem with any other mouse. This is the primary reason for my two star review. In relation to the ergonomics, other parts of my wrist that never bothered me are starting to be sore (This may simply be because my muscles are not accustomed to the motion.) and because of the orientation of your wrist it is not as easy to make small precise movements.

Works great to relieve the pain I've been having in my forearm from the use of a regular mouse.Unfortunately this mouse is too 'glitchy'. The pointer skips around the screen on occasion (every few minutes). For $100 this thing should be perfect. I get better pointer response out of a $10 wireless mouse.

I had been using a top of the line Logitech laser mouse for many years until my hand started cramping regularly and my wrist began aching. My wife loaned me her wired Evoluent mouse (VM2) and after a few weeks all of that pain went away. Thinking I'd found a brand with some quality I ordered this mouse, the VM4 Wireless. What a piece of junk. The exterior looks nice, but that's as far as it goes.Oddly, the exterior doesn't fit my hand as well as this old VM2. I found it uncomfortable and awkward. The internals must be the same as a $5 mouse. The tracking is terrible: pointer jumps at random, moves on its own when the mouse is idle, and was not precise enough for Photoshop or Solidworks modeling. The random jumping had me ready to throw this thing across the room. If you find yourself doing more than scrolling web pages with your mouse, I DO NOT RECOMMEND this product. It just isn't worth the cost.I debated taking this thing apart and retro-fitting the parts from a Logitech mouse into it. But then I thought better of it and decided to return this POJ back to its maker. There are $20 versions of these vertical mice out there (Anker) that could be used for that more economically. Save your money and the headaches and avoid this mouse.

This mouse does not work as well as I had hoped because the scroll wheel starts to malfunction after about a month.

I initially bought this mouse to replace my standard, non-ergonomic mouse at my office. After about a month, the scroll wheel began to not function properly; on screen it would scroll in the reverse direction, or get stuck between points and rock up and down without continuing in either direction. This made it extremely difficult to do my work. I thought I had a defective product. J-Tech was gracious enough to replace it in kind free of charge.

Using the second product, I had the same grace period of about a month in which I did not experience any problems. Now this mouse is doing the exact same thing the last product did, so I am really disappointed with it.

The only good thing I can say, having experienced all of this, is that the customer service department was prompt to respond to my problems with their products. Upon returning the bad mouse free of charge, they provided me a full refund in a timely manner.

I wanted to like this mouse because my classic mouse is causing pain in my forearm, but this mouse isn't the solution. For one thing, the large baseplate produces a lot of friction and makes it hard to move the thing around, regardless of the kind of surface I put it on. I read one review that suggested removing the wrist rest to reduce the surface area, but I figured if I modified it I wouldn't be able to return it, so I didn't try that option.

I also found the inability to use finger movements in positioning the mouse made it very difficult to use. Imagine trying to write a letter with a pen gripped in your fist and you'll get what I mean. You could do it, but it would be pretty slow and painfully imprecise. This mouse has many positive reviews so a lot of people seem to be able to make the transition, but I guess I lack the patience to try to get there. I want to put my effort into my work, not to positioning my mouse.

I liked how the mouse felt in my hand, and the concept is spot on, but the execution is not so good.

After owning, and using this mouse, for a whole day (GASP), I was not pleased with it.

The mouse itself was very light and moved well, but the buttons on the mouse felt very cheap. I'm a PC gamer, and the left click on this mouse was terrible. Each click felt like 3 or 4 clicks, and sometimes it wouldn't register a click or double-click. It also seemed to have that plastic creak to it when using the buttons. It drove me crazy, and I decided not to keep it and return it.

I purchased this after reading all the great reviews and was in the market for a new ergonomic mouse that would hopefully alleviate the pain I would get now and then in my wrist due to extended mouse use at work. Unfortunately I don't think it worked for me.

Pros:
- Vertical mouse feel.
- Would work best for medium sized hands.
- Light

Cons:
- The construction feels a little too plasticy and cheap.
- The surface of the mouse seems to easily sweat up, and although I don't profusely sweat on my palms, the mouse seemed to feel slippery when holding it.
- The left and right mouse buttons are oddly placed. It might work for some, but definitely when I rest my hand on the mouse, the buttons are slightly off and I have to tense my hand to keep it right on the buttons.
- The scroll wheel is a bit of a stretch when you are using the mouse.
- The back and forward buttons are too easy to hit based on your thumb position.

Over all I feel more than relaxing your hands, you have to grip the mouse to feel you are in control of it. My search for a good mouse still continues.

April-
I had palm and wrist pain and my arm and hand would go to sleep before but now I have no problems. I adapted to the change really well. It did take getting use to, had to slow down a bit while working but after a few days I was using this product as if I always have.
This is an update. I started having problems with the mouse not working at times last month and then this month, "June" the mouse completely stopped working. I had to go back to the regular mouse I had on backup and my wrist already hurts. I am totally bummed!
Purchased April 2015 and it stopped working June 2015.

Bought this mouse to help with wrist problems. It is great when it works. After 2 months, it keeps pausing and then will die, then I have to remove the battery for a while to get it to work again. Trying to contact the manufacturer is also a nightmare. The phone number I received rings and rings and then hangs up. No voicemail. When you pay $$ for a mouse....... it shouldn't break after two months.

I've used this style mouse from Evoluent for years. I loved it.I hate this model. The surface has changed and it's too slippery. I can't even grip it anymore. I had to rub it with stick stuff to make it grippable. I have to lick my fingers - to get a grip. Sorry you guys messed up a great productUPDATE: I've been working with this mouse for over a month now and continue to get frustrated with it. For me - it would be perfect EXCEPT for the slippery surface. When I spoke to Bradley at customer service I was told basically you are SOL. I've had it too long to return and, except for defects, they won't take it back. I even asked to just swap with the older models and they would not do it. I consider this a defect but they would have nothing of it.I was told I'm not "using the mouse properly" (seriously??). I work on a desk with 3-4 screens. I have to slightly pick up the mouse to get it to span from monitor to monitor. This mouse is too slippery to do that...so now I am going to Physical Therapy for my RSI and I believe part of the reason for this is the slippery surface. I have to clutch it much harder to get a grip.SO - when you have crappy customer service like that...and a product that lost it's integrity - means the company doesn't really care about YOU. This mouse is for people RSI - people who HURT and have pain..and to not collaborate with the customer to ensure satisfaction - to reduce pain sucks - particularly for so much money.I won't buy an Evoluent again...and I have many years of mousing ahead of me. I will find another product. Suggestions??UPDATE: 8/4/2016 - Customer service at this company stinks. You don't spent 100.00 on a mouse because you want bull..one does that because you have pain in your hands and the mouse is supposed to help you not hurt you. I don't want them to tell me that I can't return it because it is over 30 days. I am now using a J-Tech Digital and I ABSOLUTELY LOVE IT. it's 1/4 the prices. Bad customer service here. Not work the money

In July 2015 I bought this wireless mouse through Amazon. In the Fall I began to experience freezing of the cursor on-screen perhaps once per hour of use. Restarting the computer eliminated the problem but with loss of content. In November, it seemed to happen more frequently when returning from SLEEP mode than from a standing start. I contacted Evoluent customer service who told me to simply remove and re-insert the usb receiver from the usb port. This worked without loss of content but I had to repeat the actions each time the cursor froze. Irritating! Evoluent sent me a replacement receiver and the problem continued on a Windows 7 notebook and on a brand new Windows 10 notebook. This expensive mouse should not be having any problems with basic functioning. The company wants me to mail the mouse back for them to check, but I need a mouse for daily use! The company should have shipped me a replacement.

Piece of bad product.Did not work after taking out of box. Paid over $100 to get this mouse.Called customer care of Evoluent (650 871 1365) and they tried to troubleshoot the problem. No luck.After putting in three different AA batteries and turning on the Green light, the light won't show up on Evoluent logo.Installed Evoluent software on MAC too to see if that can help to get the mouse working but no luck.Overall, piece of bad bad bad product.Seems like they did not even care to test product before selling.Save your time and don't buy from this seller.

Compared to other vertical ergonomic mice out there, this one is pretty expense. However I still purchased it under the impression (mostly advertised on the vendor website) that this mouse has a very strong software and almost every common mac action can be configured. However when I got the mouse and installed the software, it was a different story. First the software did not work properly, and after calling the vendor support number, the operator told me that he was aware that the software does not work with MAC OS Al Capitan 10.11 and that the owner of company might not bother to have it fixed, so I should resort to some generic controller software out there. I tried generic software and most crashed my laptop several times. Anyways without proper software and proper commitment from vendor, this mouse is not worth the money. I have finally shipped it back for refund.

While the angle is supposed to be more beneficial, it doesn't do as good relieving carpal tunnel as my work provided 3M Ergonomic mouse. Yes, it has a ton more buttons and features but, it was replacing the Microsoft Explorer trackball at home which I loved and for the cost of this mouse, I don't think I'm getting the same level of relief. Let's face it, I do 99% left click, right click, or wheel and every other device could have done that as well as this expensive device. Too much money for too little benefit. I recommend you strongly consider what features you really need.Update July 11, 2015. I've been using the mouse over a year now and I've come to realize how flaky it is. The wheel scrolls up on the screen half the time when I roll it down. The scroll wheel is junk! It started doing this shortly after the return period so I was left with no other return option and I've been forced to live with it. I definitely don't recommend this product - you are better off with the 3M joystick mouse which I use at work (http://www.amazon.com/3M-Ergonomic-Optical-Compatible-EM500GPL/dp/B00008KWWF). While not very feature rich, it is reliable and has lasted me over 6 years! It was 1/2 the price of this too!!!

For those who move the mouse around, it may not be comfortable as I found I had a hard time lifting the mouse to move it where needed on my dual screen setup. The size was a bit larger than I expected and did not fit in my keyboard tray. (see pictures). Trying to put the cord over the desk since I could not get it in the keyboard tray made the mouse lift at the tip at times as the cord would get hung up. I don't have the option to leave the keyboard tray open indefinitely and run the cord through the keyboard tray, as normal. I also found an ergonomic issue, where my finger had to curl up fairly far in order to move the wheel fully. Compared to my previous mouse (seen in the pictures for comparison where I put my finger at the end of the wheel), it was uncomfortable to use it this way and trying to use the wheel with different fingers did not resolve the problem. I have average size women's hands and it felt too small as I would have liked the wheel further out from my palm. I also ended up hitting the buttons next to the thumb when trying to lift the mouse, which I suppose I could have tried disabling. This mouse was simply not for me.

Big bulky and very hard to use due to very large base I thought this would be comfortable to get my wrist off the mouse pad and onto the mouse however that increased surface area on any surface I tried and caused an increased drag thus causing me to expend more energy on my wrist which I was trying to elevate by using this. Big and heavy lots of surface drag caused excessive wrist pressure to use all day.

Mouse was slow and jerky, and the scroll wheel requires too much lift, putting stress on the back of my wrist. Removed it, and now my old mouse and keyboard barely work. Even system restore didn't fix it. I've uninstalled everything through device manager, and am staggering along, but I think I see a windows re-install in my future.

Revising this review to 1 star. Purchased November 2015. As of August 2016 the mouse is not tracking properly. I have tried cleaning, different mouse pad (surface and color), reinstalling driver, switching USB ports. Nothing helps, so I believe it is the product itself. Less than a year and I need another mouse. Would not purchase again.Original review below.

The buttons on this mouse click effortlessly, which is great on your hands, but makes it easy to click by accident - especially the thumb buttons. The palm rest was so miserable, I took it off after 10 minutes. Right, left, and wheel are fantastic. The wheel bumps as you scroll so it is nice and tactile, and the buttons are very smooth to click. They make the same click sounds as any other mouse. If you have carpal tunnel, this is a fantastic option. HOWEVER, it is so easy to accidentally set off the thumb buttons (backward/forward), it has caused problems for me. According to J-Tech's website/help board, there is currently no way to reassign or disable buttons, so I put a line of super glue along the top ridge of each thumb button so they can no longer depress. Unfortunately, I had to permanently take out half of this product to make it work well for me, and for that reason, it gets 3 stars.

*****
Update: 8/12/15

So I've had this mouse for nearly 4 months and it has broken in the strangest way: One of the springs in the battery housing will no longer hold the battery in place.

I began having issues yesterday. It randomly stopped working. I thought perhaps the batteries were dying. I took the batteries out and put them back in and it worked again. Earlier today it did the same thing. Again, I took the batteries out and it worked. Then just a while ago it happened again. I decided that the batteries were definitely dying. So I took the batteries out, got new batteries, and put them in. When I put the second battery in, it felt loose. I turned the mouse over without replacing the battery cover and one of the batteries fell out. Odd!

I took the batteries out and looked closely at the battery housing. I discovered that one of the springs was completely flattened (see attached photo). I thought perhaps the spring was just caught at an awkward angle so I tried to tease it away from the side. That didn't work. So I got a toothpick and pulled it away from the side. That worked, but imperfectly. The spring is now distorted. I put the batteries in, put the cover back on .... and the mouse doesn't work. I tried opening it up again and ensuring that the spring was in the right place, not touching anything it shouldn't ... but no, the mouse doesn't work.

So while I appreciate the price of the mouse, I do really need it to work.

*****
This is my second vertical mouse. My first one was MUCH more expensive than this (over $100) and was corded. Unfortunately, I have a cat who loves to chew cords - especially the small ones used in electronics and computer peripherals. So she killed my other mouse. I couldn't afford to replace my original vertical mouse and I also knew that she'd chew the cord again, so being wireless was VERY important.

I found this mouse and read the reviews. Some mentioned that it takes a while to get used to. I thought that I wouldn't need to get used to it because I was already accustomed to using a vertical mouse. I was wrong; this mouse does take some times to get used to even if you are already accustomed to using a vertical mouse.

It took me a couple of weeks to get used to the mouse and before I found it to be super easy to use. I do some gaming but mostly web browsing, writing and editing documents. I have arthritis in my hands and the vertical mouse helps me to keep that from becoming too painful.

The wireless connection for this mouse is excellent. It is very small - really just a nub that goes into a USB port. Since it doesn't stick out and doesn't connect to a wire of any kind, it's completely safe from my adorable but frustrating cat.

I highly recommend this mouse for anyone who has arthritis or repetitive motion injuries in their hands. I highly recommend the wireless version for anyone who needs to minimize wires for any reason.