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 laptopBluetooth 3.0 wireless connection,fast response without delay,more power savingBuilt-in 420mAh battery,can be recharged via attached cableSimple design,thin and portable,easy to carrySpecifications:Dimension: 281 x 185 x 6.5 mmWeight: 2805gBluetooth solution: BT3.0Valid distance: >=10 meterWorking voltage: 3.7VStandby time: 180 dadysCharging time: 2.5 hoursBattery capacity: 420mAhBattery lifespan: 3 yearsWorking temperature: -10 to +55Compatible with:Microsoft Surface Pro 4Microsoft Surface Pro 6Microsoft Surface Pro 5Microsoft Surface Pro 7Package included:1 x Keyboard1 x Charging Cable1 x English and Chinese User ManualOther items not include