Brand RII Model I8 Quantity 1 Piece Color White Material TPU Compatible Models PC laptopHTPC network player X-BOX etc. Supported OS Windows 2000 XP CE Vista Windows7 Android (2.1 above) etc. Wired/Wireless Wireless Keys 92-Key QWERTY Connection Wireless Operating Range 10 m Battery 300 mAh Charging Time 4 hours Working Time 200~360 hours Standby Time 500~700 hours Features Wireless receiving technology: 2.4GHz; Working voltage: 3.3 V; working current: less than 50mA; charging current: less than 300mA; Packing List 1 x Keyboard 1 x USB cable (75cm) 1 x BL-4C battery 1 x USB receiver 1 x English user manual