Vertical Ergonomic Optical Mouse Blue By Equal Sign

I bought this mouse for my daughter who is a young adult and is having problems with tendonitis in her arms. She had no problem whatsoever installing it and it worked fine. She really liked the design because it was easy on her arm, much better than a regular mouse. The only disadvantage was that she couldn't close her keyboard tray completely because this mouse is taller than a regular mouse. But after about 2 weeks, the scroll button broke. We looked inside and found there was no way to fix it -- the plastic tab that held the wheel broke off and we were sure that glue wouldn't hold it together for long. So we returned it with no problem. It's hard to say if we just got unlucky or if mice fail often but I do think the design of the scroll wheel makes it likely to fail as it did. I wasn't too upset though because the mouse was very inexpensive and my daughter got to try it out to see if a vertical mouse was a good choice. It was, so we purchased a more expensive one that has worked out well for over a month now.

This mouse has completely eliminated my wrist, hand, and forearm pain.

It's a nice idea, and feels comfortable, but... The scroll wheel broke--it just flops around inside the mouse now--in the first hour of use.

This has staved off my carpal tunnel. It's a great product, I recommend it