The business-style leather case is made of high-quality material Fine workmanship, and equipped with 3 colors backlit so that you can normally use it at night With a pen slot for storage, you are not afraid of losing your pencils pencil is not included 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 Micro USB cable, and it can be freely carried and used when fully charged Specifications Bluetooth Standard 5.0 Effective operating distance 10 meters Modulation method GFSK Working voltage 3.7-4.0V Working current Standby current Sleep current Charging current 200mA Standby time 100 days Charging time 2-3 hours Lithium battery capacity 450mAh Sustainable working hours not less than 30 hours Lithium battery life 3 years Button force 80-10g Button life 5 million clicks Working temperature -10 -55C With touchpad yes Backlit Tri-color backlit Charging port Micro USB