Logitech M335 Mouse, Wireless Blue, 910-004546 (Blue) Universal compatibility via Unifying receiver, Max Operating Distance 33 ft it's a mouse party. And everyone's invited Design that delivers high availability, scalability, and for maximum flexibility and price/performance Micro-precise scrolling: New designed-for-web scrolling makes searches, shopping and browsing easier Feel-good design: Contoured shape and textured rubber grips keep your hand comfortable even after long hours Compact, portable design, 18 months of battery life Powered by a single AA battery Comfortable, curved shape with rubber grip