Connection: 2.4GHz Wireless Wireless distance: about 10m Key: 29 Keys Material: silicone key + plastic shell Power supply: 2*AAA battery (not included) Size: 157x42x16mm Weight: 60g Applicable devices: PC, Tablet PC, HTPC, IPTV, Web TV, Smart TV, for Google TV, Android TV Box/Stick, Home Appliances, Multi-media Devices, etc Compatible systems: Android, Windows, for Mac OS, for Linux