EasyGlide Wireless Mouse w/SurfaceTrack "This wireless 2.4Ghz 3 button mouse with SurfaceTrack technology works on virtually any surface and features a plug-and-forget nano dongle. SurfaceTrack Technology works virtually on any surface 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"