Logitech Harmony 900 Universal RF Remote Control Number of Devices Supported: 15 Display: Full-color touch screen Range: Up to 100 feet Backlit Buttons: Yes Color: Black Receiver: RF receiver System Requirement: Windows-based computer: Windows 2000, Windows XP, Windows Vista or Windows 7. USB port CD-ROM drive Internet access Mac computer: Mac OS X 10.3-10.5 USB port CD-ROM drive Internet access Battery Type: Lithium-ion Rechargeable Battery