If you're a gamer or a graphic designer, look elsewhere. The power saving function of the mouse makes it shut off until it feels motion. So if you're not using the mouse for just a little bit, it powers down and waits for movement.It's a very ergonomic mouse, with responsive buttons and nice LED indicators, but if it can't let you move around the screen when you need it to it's not much more than a (bad) paperweight. Move along.