2.4 GHz cordless optical mouse for notebook PCs. Up to 1 year battery life and battery indicator. Tilt wheel plus zoom lets you scroll up/down, side-to-side, and zoom in/out. 2.4 GHz micro receiver provides a 10-metre range, snaps into base for transport and turns mouse off. Precise optical-tracking technology optimises productivity. Windows® 98, 2000, Me, or XP or Mac® OS X 10.1.2 +; USB-connection.