Wireless ultra?thin Bluetooth full?size portable folding keyboard with independent numeric keypad area. Specification: Item Type: Folding Bluetooth Keyboard Working Distance: Approx. 10meter / 32.8ft Built-in Battery: 180mAh Working Voltage: 3.2-4.2V Working Current: ? 3mA Standby Current: ? 0.5mA Sleep State: About 20 minutes How to Use: 1. Turn on the power switch, the blue indicator light will light up, press the button, the Bluetooth keyboard will enter the pairing condition, and the blue indicator light will keep flashing. 2. Turn on the power of the device and select the settings icon on the screen, click it to enter the system preference list. 3. Click the Bluetooth icon to enter the device Bluetooth search criteria. 4. In the device Bluetooth search, you can find keyboard, click it to connect. 5. After the device is successfully connected to the Bluetooth keyboard, you can start typing with the keyboard for free. Packing List: 1 x Keyboard 1 x User Manual 1 x Charging Cable Size: Approx. 35.8 x 10cm / 14.1 x 3.9in Floding Size: Approx. 10 x 17.8 x 1.8cm / 3.9 x 7 x 0.7in Package List: 1 x Keyboard 1 x User Manual 1 x Charging Cable