Contour Design Unimouse Left-Hand Wired Ergonomic Mouse, Fully Adjustable 2.4GHz for Laptop & Desktop, Mac & PC Compatible

I have tried many different types of ergonomic mouse, some right handed, some left handed, yet this one is definitely the best!I am very glad that I have found it accidentally. Just started using for a day so cannot speak to its actual battery life, but it is definitely very comfortable.What I like about it so far:1. Adjustable: the angle adjustment is already awesome, the thumb rest adjustment is even better. Some reviews says it only go back and forth - it is INCORRECT. If you put a little force on the top part of the thumb rest you will notice it could rotate on top of the ball shaped base. So you can micro adjust its direction to make sure it work to your liking. I have small hands, but I like to use my mouse in certain way that none of the previous2. Programmable buttons: I have not yet customized them but the default middle button is double click, which is a delightful surprise.3. Wireless: the dongle has been working very well with my Macbook.What I hope it could improve:1. Bluetooth as a wireless option2. Battery indicatorbut all in all, it is a very solid left handed mouse and it looks good.

Since I started having some RSI issues, I've used vertical mice almost exclusively. I picked this particular mouse because most vertical mice have just two real buttons; I don't like using the roller itself as the middle button because I find it harder to hit precisely. (I use the middle button all the time to open up links in another frame.) By default, the middle button on this mouse is mapped to what the roller button would be on an ordinary, two-button mouse. The roller is also a button (not sure what button number it is, I never use it).The only other vertical mice I found that have 3 real buttons are the Evoluent mice, which are also excellent mice, but even more pricey. I have several of those too.It's handy that this brand makes left-handed mice. I'm not actually left handed, but I used a mouse enough that my right hand was sore, even with an ergonomic mouse. So now I use mice in both hands at different times. It took a while (maybe a day or two, if I recall correctly) to learn how to use a left-handed mouse with the same precision, but now I don't even think about it.This mouse works about as well as the Evoluent mice, with one key difference: the angle is adjustable in this mouse, not with the Evoluent mice. Seems like a great feature. I don't know, though, that I really *need* it to be adjustable; I usually just keep it vertical. That's not why I got this mouse. (Though it helps slightly when you want to pack the mouse up--it doesn't fold flat by any means, but at least you can make it not quite as tall.)Originally, my review stated that I had some problems with the mouse cursor jumping around after I plugged it in, so I thought it wasn't as good as the Evoluent mice on smooth surfaces. Turns out I was wrong: it was another mouse I had plugged into the same computer which was causing the jitters. (I've got so many mice I don't know what to do with them.) Raised review to 5 stars when I realized this. I have so far encountered no problems at all with this mouse.So after resolving the issue with the mouse jitter, I don't see that this is any worse than the slightly pricer Evoluent mice, and it has the ability to change its angle. Best vertical mouse I've found.

This product is designed like trash. thumb button is useless not a good one hand option

i use my mouse A LOT. between graphic design and blueprint and schematic editing programs it takes a toll on my wrist. so when i found this i figured I'd give it a try. I've seen some of the "joystick" style mice and the ones with the huge roller ball.... not for me. this one conforms to the natural contour of my arm, wrist, and hand. it has so much adjustability that i think it would be nearly impossible to NOT find a position that works. i first used the wired one at work, then bought this wireless one for home. the battery life is phenomenal. it has 10 (yes, 10!) cursor speed/sensitivity settings and 3 programmable buttons, but you do need to download their software for that functionality though. the DPI settings can be used without the software. and as a lefty, i am absolutely THRILLED that there was no upcharge for that little quirk.