This mouse is the worst I have ever used. This goes beyond the trackball that was full of cat hair type bad mouse. I plugged it in and I can't use it more than a foot away from the device I'm trying to control. As in, I'm a foot and a half away from the receiver and it won't work. I have no interest in fighting with this device when a logitech will just work with no problems.DO NOT BUY or BUYER BEWARE.No description on the box or any information that would lead me to believe it should act this poorly.Again, DO NOT BUY.