"This is my follow up review after a year of use. This is one excellent mouse. NEVER had a single problem. I've used it in all kinds of situations and in some pretty hot weather in Asia. Really a good mouse. I just read another reviewer indicate some frustration with the mouse cutting off - something must be set wrong in the install software / bluetooth or something else is interfering (hope it got fixed). I've never had any issue. Anyway, just my 2 cents worth. Cheers!"