For Microsoft Surface Pro 4/5/6/7 Keyboard Magnetic Rechargeable Bluetooth Keyboard (Without Backlit) The keyboard can be connected with leather cover (not included) by magnetic adsorption,and change into the working mode of laptop Bluetooth 3.0 wireless connection,fast response without delay,more power saving Built-in 420mAh battery,can be recharged via attached cable Simple design,thin and portable,easy to carry Specifications: Dimension: 281 x 185 x 6.5 mm Weight: 2805g Bluetooth solution: BT3.0 Valid distance: >=10 meter Working voltage: 3.7V Standby time: 180 dadys Charging time: 2.5 hours Battery capacity: 420mAh Battery lifespan: 3 years Working temperature: -10 to +55 Compatible with: Microsoft Surface Pro 4 Microsoft Surface Pro 6 Microsoft Surface Pro 5 Microsoft Surface Pro 7 Package included: 1 x Keyboard 1 x Charging Cable 1 x English and Chinese User Manual Other items not include