product description 1. Bluetooth + 2.4G dual mode, one-click switching, quick connection 2. Automatically identify Windows/iOS/Android/Mac OS systems 3. Large multi-gesture touchpad, left and right buttons 4. Turn on the computer with one click (Win) 5. Built-in polymer lithium battery 500mah 6.Type-C, charging time is about 2-3 hours Numeric keyboard and trackpad Material:ABS plastic Supported systems: iOS, Android, Windows Number of keys: 22 keys Wireless/Bluetooth solution: Bluetooth + 2.4G dual mode Bluetooth version: Bluetooth 4.2 Keyboard life (number of keys): 5 million times Response speed: 30ms Wireless/Bluetooth transmission distance: 10 meters Operating current/voltage: 1mA/3.7V (typing), 7mA/3.7V (touch) Built-in lithium battery: yes Battery type and capacity: Polymer soft pack lithium battery 303450,500MAH Charging time: 3 hours Charging interface type: Type-c Usage time: more than 6 hours Standby time:>6 months NOTE PLEASE READ Bluetooth Connect method: Turn the keyboard switch to on, press "ESC+Bluetooth" Buttons to switch