YJ-A9+ Split Bluetooth Keyboard Leather Tablet Case Features 1. Supports horizontal and vertical screen switching, easy to use. 2. Touchpad design, responsive and precise control. 3. Colorful backlit keyboard, you can switch colors at will, full of atmosphere. 4. The detachable keyboard can connect up to three devices at the same time and can be switched for use. 5. Built-in large-capacity lithium battery, the working time of turning on the light is about 4~6 hours, and the working time of turning off the light is about 200 hours. Parameters 1. Working voltage: 3.0V~4.2V 2. Working current: less than or equal to 3.0mA 3. Working hours: greater than or equal to 80 hours 4. Low battery alarm: 3.0-3.3V 5. Sleep current: less than or equal to 0.3mA 6. Standby time: greater than or equal to 100 days 7. Battery capacity: about 250mAh 8. Button strength: 50g-70g 9. Button life: 3 million times 10. Charging input: 5V500mA 11. Connection distance: 10m 12. Charging time: 2~3 hours 13. Charging current: 150-300mA 14. Wake-up time: 2~3 seconds 15. Charging interface: TYPE-C 16. Operating temperature: -10 degrees Celsius to +55 degrees Celsius