ProtoArc Vertical Wireless Trackball Mouse, EM05 NL Bluetooth Ergonomic Rollerball Mouse Rechargeable Computer Laptop Thumb Mice, 3 Device Connection, Compatible with iPad, Mac, Windows, PC-GrayClimatePartner certified

If you're accustomed to a thumb controlled track-ball or don't have enough surface space for moving a mouse, or having issues with carpal tunnel, I recommd this trackball.I started using trackball more than 20 years ago when I developed carpal tunnel from using the tiny keyboard and track pad on my IBM ThinkPad when attending college. Making the switch solved my wrist issues. I still usually use a mouse for gaming, but I have used trackballs for normal PC work ever since. However, all of the trackball I've used had my hand lay flat, similar, but better than a mouse. I've the side-ways mice before, and frankly, the shift of hand-weight made them more difficult to control, in my opinion, so I've never really liked them compared to other mice. That said, this is the first such hand position for a trackball I've seen, and I was intrigued, since my complaint for the position was related to arm movement. I ordered this and after a couple months usage, I can say this is the most comfortable trackball I've owned (it actually beats out my previous discontinued favorite, the discontinued Microsoft Trackball Explorer) . Another feature I really like that hasn't been readily usable on other trackball's I've used is the dpi button. I do occasionally game on my laptop, and this turned out to be a nice feature-add for me, too. So overall, I highly recommend for existing trackball users or people who are looking for ways to improve the ergonomics of their laptop or PC use. 5 stars.

Thoughtful design, quality build, comfortable to usePosture is perfect, flange under palm pad ads comfort and control, thing stays put but is also easy to move around, 5 ball speeds, easy to clean.Will be buying the matching keyboard when mine dies.Only feedback I'd give is to ask for a bigger version for those of us with big @$$ man hands.Great mouse, buy it now.

I just received this alternative to a Std Mouse, (to a Std Trackball Mouse, and to a Std Vertical Mouse), and I must say it is all it claims to be in terms of use and functionality. The buttons work very well in their designed locations and the trackball ensures I minimize my hand/arm movements. I am enjoying the user experience.I had long ago moved from using a Std Mouse to using the Trackball alternatives, (of which I highly recommend the Kensington, Nulea, & Logi-tech options if someone is not ready to move to a Vertical Mouse).So while my current favorite option for a Std Mouse is the Logitech Ergo Trackball Mouse, when it was recently liberated (ie lifted/stolen) from my temporary workstation location, I decided it was high time to try the Vertical options available.I looked and tried several Vertical Mouse options, and although fairly comfortable with a few, I missed the use and functionality of having a Trackball Mouse. So when I discovered that Kensington & Logi-tech and a few other brands had some Trackball Vertical Mouse options I was thrilled.After reviewing the, (limited), options available I ended up selecting the ProtoArc Vertical Wireless Trackball Mouse, EM05 NL Bluetooth Ergonomic Rollerball Mouse for the following reasons:1> A "true" vertical mouse setup with a 62' Tilt2> A rechargeable mouse. Charging via a Type C USB cable option, with an included charging cable.3> A 2.4 Hz Dongle along with Blue-tooth wireless connectivity options4> Compatible with both Apple / Mac, Windows, PC Android, (this means in a pinch my significant other can use it as well for her Mac).As noted above I just received this mouse and have been putting it through its paces and so far, I think it's excellent.However, I am giving it 4 of 5 Stars, (as the system is not allowing me to give a 4.5 out of 5), for the following reasons:A> The trackball could be a little bigger even though it is thumb-specific, I have found the tracking of the larger trackballs for finger control tends to be a little easier to use, and therefore I would like the thumb trackball to be a little larger for that control.B> The Dongle could be set up for easier visibility. I find that keeping the Top and connecting edge Black requires a bright lighted area to ensure it is connected correctly and smoothly. So a brightly colored top and a white, (or other bright color connecting edge to the USB portion), would allow for faster and easier connection setup.C> Non-Programmability of Buttons prevents customizationD> Lack of covering for the charging port and Dongle insert areas would be a plus from my perspectiveWith that said, besides what I noted above, I also have the following recommendation:E> The creation of a Travel Size version of this or other Vertical Mouse. (As noted above I was using the Logitech Ergo Trackball Mouse and although it's big, I had a case for it so it allowed me to take it for some limited travel, so having the option to purchase a case would be a very good option. However, when doing serious traveling I defaulted to using a "miniature version" of the Std Mouse as space becomes a major restriction.So even with the feedback given above, I do want to stress that overall I am very happy with this ProtoArc Vertical Wireless Trackball Mouse, EM05 NL Bluetooth Ergonomic Rollerball Mouse, and I would highly recommend it to anyone, especially to those interested in transitioning to a vertical mouse and to anyone who would also appreciate having access to trackball functionality as well.

I returned a Logitech Ergo M575S, and bought this instead. I was much happier with my purchase. This felt like it was made better. The ball was smoother, the clicks felt nice. Its a little strange to hold at first, but when you get used to it, it feels pretty natural. The button placement is good as well. This was far superior to the Logi though. Not even close, in fact.

It is a great mouse and very comfortable, but the pointer speed is so slow compared to my Logitech. Yes I have pointer precision turned on, but even maxed out to the fastest my PC allows, it still takes me several rolls to go from one end of my screen to the other. I appreciate it when I'm working on technical designs, but it is annoying when I am trying to surf the web or do anything else.

Love this trackball. The design is excellent and the ergonomics are very comfortable for long term use.... Like gaming .... Also is very responsive with my gaming. On par with the Logitech trackballs

Perfect for my job