ELEGIANT 2.4G Optical Wireless Keyboard and Mouse USB Receiver Kit w/Cover For PC Desktop Mac White New improved wireless,uses 2.4GHz wireless for much greater range (up to 10 Meters) and less chance of interference from other nearby wireless devices; You can work or play in more places like your comfy couch,the long-range wireless connection virtually eliminates delays,dropouts,and interference. Multiple battery-safe mode,support wake-up function in PC and enter sleep mold automatically while idle, and Invisible receiver compartment.(Receiver stowable in the mouse:protects against dirt or loss.) Compatible with Windows ME/2000/XP/Vista/7/ Mac, Keyboard battery support 2 * A AA batteries (not included) & Mouse battery support 1 * AAA batteries (not included) Note: This 2.4G keyboard Mouse only works with PC ,not work with IPAD , touch screen Tablet PC.