The removable Bluetooth keyboard + leather case makes your tablet transform into a laptop in less than a second. Leather Case: Made of skin-friendly PU material, and the back is made of anti-bending acrylic Designed with drop-proof airbags, can effectively protect your tablet Can be changed into a kickstand in seconds, supports multi-angle adjustment, and can be rotated in both directions Supports smart auto wakeup/sleep design, which can effectively save power With a built-in pen slot, the stylus pen is easily stored without worrying about losing it (stylus pen not included) Bluetooth Keyboard: Bluetooth 3.0, upward compatible with 5.0 Bluetooth devices Using high-speed chips, connect to Bluetooth devices in seconds The keys are made of water drop round keycaps for comfortable and quiet typing It is charged by a Micro USB cable, and it can be freely carried and used when fully charged Specification: Battery material: lithium-polymer battery Bluetooth: 3.0 (upward compatible with 3.0/4.0/5.0/5.1 Bluetooth devices) Effective distance: 10 meters Standby time: >100 days Continuous working time: not less than 100 hours Charging time: 2-3 hours Lithium battery capacity: 280mAh Lithium battery life: 2 years Button life: 3 million clicks Modulation method: GFSK Working voltage: 3.0-4.2V Working current: 4-8mA Standby current: <0.3mA Sleep current: <40uA Charging current: 100mA (normal) Charging method: Micro USB cable