Features:Compatible with most tablets, suitable for 7~7.9 inch tablets. Widely suitable for Android/Windows systems.Ultra-thin design, which is very convenient for you to carry it to travel.Comes with a touchpad, which gives more convenience and makes operation easier.Scissors feet design makes keys return rapidly. Gives a fast and comfortable typing.It can be used with smart phones, tablets, laptops and desktop computers. Super long service life up to 5 million clicks.Large capacity battery enables this for Bluetooth keyboard to work for continuous 40 hours and stand by for 60 days.Specification:Product Type: For Bluetooth Touchpad KeyboardMaterial: ABS, Aluminium AlloyColor: BlackSize: Approx. 20 x 12.7 x 5mm/0.8 x 0.5 x 0.2inFor Bluetooth distance: Approx. 10meters / 32.8ftWorking System: for Android/Windows systemsOperating voltage: 3.0-5.0VWorking current: <2.0mAStandby current: 0.3-0.5mASleeping current: <25UACharging current: 100mACharging time: 4 hoursLithium battery capacity: 120maLithium battery life: 3 yearsCharging mode: micro USB chargingWork time: 40 hoursStandby time: 60 dayKeyboard service life: 5 million clicksWorking temperature: -10~55℃Package Weight: Approx. 139g/4.9ozPackage List:1 x Keyboard1 x User ManualNote:1. Please allow 0-1 inch error due to manual measurement, thanks for your understanding..