DO NOT BUY THIS MOUSE. It's wider than most of the mice I've owned in my computing career. Can't really call it ergonomically-designed if I have trouble gripping it, and I have big hands. The software running this mouse was designed to be aesthetically pleasing, but mostly useless. Also I found a bug where if you have volume-up bound to the pageup button on the mouse, and you click it while the mouse is moving, it will keep triggering that action.