Lenovo completely redesigns the popular multimedia remote controller, giving you more fun and function for wireless control of your PC for business and entertainment, mini wireless keyboard with OFN for flexibility, Palm-sized dimensions makes you more easily to remote, USB nano dongle, plug and play, no driver to install, 2.4GHz radio frequency, as far as 10 meters control distance.-2.4G wireless keyboard and OFN (optical finger navigation) with left key function, Slide Bar -Pocket-sized keyboard & mouse-in-One -Ultra-small receiver, plug and play, no driver install -Windows keys/media keys+ IE Hot key -Battery life 3 months(two AA) -Maximum 10 meters remote control -Compatible with Windows® 2000 ,XP, Vista®,Windows® 7 Windows® 8