•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: 280±5g •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