SMK-LINK VP6155 White 3 Buttons 1 x Wheel Bluetooth Wireless Blue-optical Notebook Mouse Power Supply: 2 x AAA Batteries Distance: 33 ft. Range System Requirement: Bluetooth enabled system (with built-in native Bluetooth or via external Bluetooth dongle). Windows XP, Windows Vista, Windows 7, Mac OS X. Open USB port for recharging. Package Contents: 47001W Electrical Outlet Plug Type: Plug Type “A� (USA, Canada, Mexico, Japan)