This Kensington SlimBlade trackball makes your computing experience smoother, faster and easier with a laser trackball that can do it all. The trackball is designed in black, silver and ruby red colours, with an ergonomic, sleek, low-profile design that provides all-day comfort. In addition to the usual productivity gains of a trackball, with a simple twist of the ball, you can scroll up and down pages. It provides less wrist and hand movement that decreases the chance of repetitive-stress injuries. It also allows you to turn your trackball into the ultimate media controller so you can adjust volume, hit play/pause, stop, and forward/back. The large 55 mm ball delivers exceptional precision. The wired 150 cm USB cable provides reliability and avoids the need for batteries. Comfort and productivity are at your fingertips with the SlimBlade trackball!