I buy this mouse March 4, 2012, over a year after I put a comment, I RECOMMENDS that mouse! Why? Well because it is great! The battery is supposed to hold 3 years, it's been over a year since I use it every day, the charge level is estimated at 85% !!! I never léteint! Only when I carry my PC (rarely). Good sensitivity, laser technology, FlowScroll (smooth scrolling) or flick. All buttons need to be fast in both media for the game (not a mouse pro gamer but I enjoy all the same). Voila, then to the wise!