Brand RII Model K01+ Quantity 1 Piece Color Black Material Plastic Compatible Models Windows and Mac OS PC HTPC network TV TV BOX PS3 games Supported OS Windows 2000 / XP / Vista / 7 Mac OS 10.x or lower Linux (Debian3.1 Readhat9.0 / Ubuntu8.10 / Feadora7.0) Wired/Wireless Wireless Keys 72 Connection Wireless Operating Range 10 m Battery 300 mAh Charging Time 3.5~4 hours Standby Time 500~700 hours Features Transmission power: 4dbm; Working voltage: 3.3V; Working current: Other Control range: More than 10m; Multi-functional wireless keyboard (keyboard / touch board / laser) use 2.4GHz wireless technology built-in backlight chargeable Li-ion battery mini QWERTY full function mini entry receiver Packing List 1 x Keyboard 1 x 2.4GHz receiver 1 x Charging data cable (60cm) 1 x English user manual