Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Works great - and is really helping my RSI

I'm a writer/photographer, and recently had serious trouble with repetitive stress - not carpal but ulnar tunnel syndrome (in my elbow). I use the mouse a lot, especially when processing photos. I was having a bad time with my mouse hand, so I went looking for a mouse I could use with either hand, and in alternative positions to relieve my RSI.So far, this mouse is working out great. I use it in my left hand, but can also set it down and use it like a regular mouse. This gives me the variety of motions I need to be able to keep working but avoid worse problems.Adjusting to it has taken some time - it isn't automatic or natural - but I'm getting along just fine. The mouse feels good in either hand and seems well made. All in all, if you're worried about RSI this mouse is worth a try.