Kensington 72225 Pilot Mouse Bluetooth Mouse (PC/Mac) DiamondEye optical technology responds to your fastest movements with accurate tracking ultra high-speed tracking and unmatched acceleration guidance Provides secure, interference-free performance with any Bluetooth enabled computer and up to 7 other Bluetooth wireless devices Has a wireless range of up to 30 feet for maximum freedom Backed by a five-year manufacturer's warranty and free technical support Contoured form and flexible rubber grips create Kensington's most comfortable mouse