Specifications: Product type: Ultra Slim Bluetooth Keyboard Material: ABS + aluminium alloy Size: 7in Bluetooth distance: 10m Bluetooth: Bluetooth 3.0 Battery capacity: 120mAh Work time: 40 hours Charging time: 4 hours Standby time: 60 days Keyboard service life: 5 million clicks Working current: <2.0mA Standby current: 0.3 0.5mA Working voltage: 3.0 5.0V Suitable: For Android ,iOS ,Windows systems Color: White Package size: approx. 21 * 13 * 2 cm , 8.3 * 5.1 * 0.8 in Package weight: 155g , 5.5oz Package List: 1 * Ultra Slim Bluetooth Keyboard