Xplorer Dock1 wireless keyboard features Extremely Durable, rated at up to 5 million keystrokes 78 UV coated chiclet key caps Ultra slim and Portable Pair up to two deviced simultaneosly spesifications Bloetooth V3.0 Wireless operation distance : up to 10 metres Standby time : About 120 day Usage time : About 70 hours Charge time : 2hours Battery capacity : 180 mAh Keyboard dimension : 290x160x18 mm