1. Bluetooth standard interface 2. Effective operating distance: 10 meters 3. Modulation method: GFSK 4. Working voltage: 3.7-4.0V 5. Working current: less than 8MA 6. Standby current: less than 0.3MA 7. Sleep current: less than 50UA 8. Charging current: greater than 200mA 9. Standby time: more than 100 days 10. Charging time: 2-3 hours 11. Lithium battery capacity: 200MA 12. Sustainable working hours: not less than 30 hours 13. Lithium battery life: 3 years 14. Button force: 80+/-10g 15. Button life: 5 million clicks 16. Operating temperature: -10 to 55 degrees Celsius 17. Charging port: Type-C interface 18. Not just a protective case, built-in bluetooth keyboard, more powerful 19. Bluetooth chip, fast speed, low power consumption, stable 20. Precise cut for easy access to all buttons and ports, giving you smooth operation 21. Bracket and pen tray function, easy to