Color Black Brand - Quantity 1 Piece Material PU leather + ABS Powered By Built-in Battery Compatible Brand Samsung Wireless or Wired Bluetooth Bluetooth Version V3.0 Interface USB 2.0 Operating Range 10 m Charging Time 4~5 Hour Battery Capacity 450 mAh Battery Number - Battery included or not Yes Supports System Win xpWin 2000Win 2008Win vistaWin7 32Win7 64Android 2.xAndroid 4.x Other Features Built-in wireless bluetooth function light silence water-resistant Working voltage: 3~5V; Dedicated Sleep mode; Working current: 100mA; Standby time: 60 days; Keys lifetime: 5 million; Working temperature: -10~55 centigrade; Humidity: 20%~50% Packing List 1 x Keyboard case 1 x Micro USB cable (40cm) 1 x Chinese & English user manual