Brand N/A Quantity 1 Piece Color Black Application For Tablets Compatible Model Universal Keys 66 Type External Wireless Keyboards Connectivity USB Connection Bluetooth V3.0 Supported Systems Nokia Symbian S60 V3 and above; Android; Windows mobile system Operating Range 10 meters Battery Built-in 250mAh Charging Time 2 hours Working Time 8 hours Other Features Working current: less than 10mA; Stand by current: less than 2mA; Working time: 30 days every day 8 hours; Standby time: 60 days; Transmitted power: Class 2; Use of ergonomic design high-efficiency and intelligent power management help you save power battery life is about 50 percent higher than like products Packing List 1 x Keyboard (80cm cable) 1 x Stand 1 x Chinese & English user manual