•The keyboard can be connected with leather cover (not included) by magnetic adsorption, and change into the working mode of laptop •Bluetooth-compatible 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-compatible 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