Wireless Bluetooth Keyboard 7inch Ultra-Slim USB Wireless Keyboard with Touchpad for Tablet-Mobile Phone-PC Compatible for Windows for Android

Specification: Product Type: Bluetooth Keyboard Material:  ABS, Aluminium Alloy Color: Black Size: Approx. 20 * 12.7 * 5mm/0.8 * 0.5 * 0.2in Bluetooth distance: 10m Working System: for Android/for Windows systems Operating voltage: 3.0-5.0V Working current: <2.0mA Standby current: 0.3-0.5mA Sleeping current: <25UA Charging current: 100mA Charging time: 4 hours Lithium battery capacity: 120ma Lithium battery life: 3 years Charging mode: micro USB charging Work time: 40 hours Standby time: 60 day Keyboard service life: 5 million clicks Working temperature: -10~55? Package Weight: Approx. 139g/4.9oz Package List: 1 * Keyboard 1 * User Manual Note: Please allow 0-1 inch error due to manual measurement, thanks for your understanding.