Digital Innovations 4230400 Digital innovations easyglide wireless mouse with surfacetrack technology Hand Orientation: Both Hands Maximum dpi: 1600 dpi Distance: Up to 30 feet Operating System Supported: Windows 98/2000/XP/Vista/Win 7 Mac OS X v10.0 or above System Requirement: USB port Package Contents: AllTerrain Mouse USB Nano Receiver (1) AAA Battery Quick Start Guide