LENOVO THINKBOOK WIRELESS MEDIA MOUSE The Lenovo Think Book Wireless Media Mouse is designed to meet the needs of a new generation who demand dynamic gadgets. The full-size design with added thumb and palm rest ergonomically caters to right-handed users. Its carefully placed media buttons ensure you can personalize both DPI and scroll speed, and complete tasks with ease. 6-buttons for unmatched productivity and performance Driverless 2. 4 GHz wireless connection for easy installation Dedicated volume +/- buttons for controlling media On-the-fly DPI adjustment: 2400, 1600, 1000 resolution 2-level scroll wheel speed adjustment for hyper-scrolling or precision Ergonomic right-handed design with thumb rest for all-day comfort 1x AA battery for up to 12 months battery life and hassle-free use