Ultrathin 80-Key Handheld Rechargeable Bluetooth V2.0 Wireless Keyboard - Black
Color: Black - Bluetooth version: V2.0 - Operation distance: about 10m - Built-in 300mAh rechargeable battery - With micro USB interface - Working voltage: 3.7V 4mA - Sleeping current: less than 200uA - Charging current: at least 200mA - Charging time: 2 hours - Standby time: 90 days - Working time: 100 hours - Support Windows XP/7 Mac OS - Suitable for smartphone/tablet/Iphone series/Ipad series/laptop etc. - Comes with USB cable (72cm length) & English user manual