The business-style leather case is made of high-quality material Comes with Bluetooth keyboard 3.0, has a long-lasting button life, durable to use The keyboard can be disassembled from the case, and the strong magnetism makes the keyboard not easy to fall off The Bluetooth keyboard adopts a high-speed chip, which can connect to Bluetooth devices in seconds It is charged with the charging cable, and it can be freely carried and used when fully charged Specifications Bluetooth BT 3.0 standard interface 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 TouchPad Yes