EasyGlide Wireless Mouse with SurfaceTrack 2.4Ghz 3-button mouse works on virtually any surface and features a plug-and-forget nano dongle. Textured design provides maximum comfort and grip; Includes battery indicator light and On/Off switch; Low power consumption for battery life up to 18 months; System Requirements: PC with Windows XP/Vista/Win7, Mac OS X v10.4 or above, available USB port.