1. KEY/Number of keys 78KEY 2. Language English 3. Battery capacity 500mAh 4. Working voltage 3.3V-4.2V 5. Working current less than 110mA when backlit, less than 2.5mA peak value when not backlit 6. Bluetooth distance within 10 meters 7. Support system IOS 8. Charging socket Type-C socket 9. LED light The blue, white, and red lights are always on when the machine is turned on. 2/S The blue, white, and red lights are flashing 2 times when the machine is turned off. Long press the power button for 3 seconds to turn on the power button Long press the power button for 3 seconds to turn off After the boot is complete, often press the Bluetooth key 3/S to enter the code pairing state, the code pairing blue light flashes (1S flashes once), and continues to flash for 3min When the voltage is less than 3.5V, the low battery indicator flashes red (flashing once every 1s), when the voltage is lower than 3.3V, the keyboard will automatically shut down, and when the voltage is lower than 3.3V, it will shut down automatically. When the keyboard is not used for 10 minutes, the keyboard enters the sleep state. The red light is always on when charging, the green light is always on when fully charged, and the red light is off when fully charged. 10. Battery display Red light flashes once: battery level> 25%. Short press for 1 second to turn on when power is on. The key shows the battery level. Red light flashes twice: battery level> 50%. Red light flashes three times: battery level> 75% 11. Applicable IPAD Applicable to ipad air 10.5/ipad pro 10.5/ipad 10.2 12. Charging current