Features: If you´re going to play at the highest level, you need a mouse that gives you an edge. The Logitech® MX™ 518 Gaming-Grade™ Optical Mouse does exactly that with its ultra-high resolution, 1600-dpi MX™ Optical Engine that delivers lightning-fast response and mirror-smooth tracking. The MX™ 518´s advantages don´t stop there. You get instant, in-game sensitivity adjustment that lets you switch effortlessly from pixel-precise targeting to fast-twitch acceleration, without any software. And the contoured grip ensures peak performance and comfort, even during the most intense gaming sessions.