I have had a G7 for just over 3 years. I have two primary gripes with this mouse:1. The batteries are terrible. You will find after about one week of use, you will need to swap them daily, sometimes more than daily if you are a heavy mouse user.2. After about 2 1/2 years of use (right out of the warranty period of course) it started to behave erratically. Clicks would turn into double clicks, drag functionality was lost, movement became jumpy. It essentially just died.I would suggest looking elsewhere for a wireless mouse.