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: Standby current: 0.3-0.5mA
Sleeping current: 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.