2-in-1 design, Bluetooth keyboard + leather protective case for iPad mini (2021) Ultra-thin, fine workmanship, simple and stylish The Bluetooth 3.0 keyboard connect stably, with long-lasting button life, durable to use The keyboard has built-in lithium battery and backlight, convenient and practical to use With a pen slot to hold your stylus pen, lets you effortlessly reach your stylus whenever you want to use Can be converted to a supporting stand for hands-free movie watching and web surfing Specification: Keyboard connection: Bluetooth 3.0 Effective operating distance: 10 meters Modulation method: GFSK Working voltage: 3.0-4.2V Working current: <2.5mA Standby current: <0.3mA Sleep current: <40uA Charging current: >200mA Standby time: >100 days Charging time: 3-4 hours Lithium battery capacity: 150mah Sustainable working hours: 100 hours Lithium battery life: 3 years Button force: 80±10g Button life: 5 million clicks Working temperature: -10 to +55℃