Specification:Features:Compatible with most tablets, suitable for 77.9 inch tablets. Widely suitable for Android/ 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 forkeyboard to work for continuous 40 hours and stand by for 60 days.Specification:Product Type: ForTouchpad KeyboardMaterial: ABS, Aluminium AlloyColor: BlackSize: Approx. 20 x 12.7 x 5mm/0.8 x 0.5 x 0.2inFordistance: Approx. 10meters / 32.8ftWorking System: for Android/ systemsOperating voltage: 3.0-5.0VWorking current: Standby current: 0.3-0.5mASleeping current: Charging 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: -1055℃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.2. Please note that the new type and old type of this product will be sent randomly, and make sure you will not mind before ordering.