Three such mice all broke down after a few months; the first had a dead cable, the second had double clicks, and the third had a defective sensor that spun inexplicably for a long time. I know, I'm such a loser, but all these mice have a sensor like a mouse for 100r. Take a friend and play rezr or steelsaers for an hour, and you'll notice the difference. These mice do not reside with me because I am such a loser.