Review on EIGIIS Ergonomic Trackball Handheld Wireless by Robert Zander

I read all the reviews on Revain.com and other sites on this air mouse before purchasing. It was cheap enough that I figured if it didn't work it wouldn't be a big investment. Pros: - Very comfortable, feels good in hand - Ergonomic, my "mouse elbow" pain is gone when I use it. Cons: - It moves randomly and just goes back to a point on your screen, you move it again and it comes back - Sometimes it just stops working and you have to left click to make it work again - Sometimes it stops just click to work and stay - clicking doesn't do anything so I can only give the lowest score - I've used it for a total of an hour, swapped the battery, tried various other tips and still the same issues. I didn't use it for more than 5 minutes at a time before experiencing any of the above issues. It's a great concept ruined by extremely poor engineering, which is very sad. But I guess I got what I paid for - back to a $90 mouse that hurts my elbow so I can actually get the job done.