2-in-1 design, it is not only a Bluetooth keyboard protector but also a tablet case The Bluetooth 3.0 keyboard has a long-lasting button life, durable to use The keyboard has a built-in lithium battery, convenient to charge and use Can be converted to a supporting stand for hands-free movie watching and web surfing Strong magnetic absorption at keyboard position, and the keyboard wont move easily There is a slot to place your pencil device, dont worry about losing it Not Included Pencil Slim and lightweight design, convenient for travel, business trip, etc. Specifications Bluetooth 3.0 standard Effective operating distance 10 meters Modulation method GFSK Working voltage 3.0-4.2V Working current Standby current Sleep current Charging current 200mA Standby time 100 days Charging time 3-4 hours Lithium battery capacity 200mAh Sustainable working hours 100 hours Lithium battery life 3 years Button force 80 10g Button life 5 million clicks Working temperature -10C - 55C Charging port Type-C