Z11B-AS Pen Slot Touchpad Backlight Bluetooth Keyboard Leather Tablet Case For iPad Pro 11 2021/2020/2018(Black)

1. Bluetooth standard interface2. Effective operating distance: 10 meters3. Modulation method: GFSK4. Working voltage: 3.7-4.0V5. Working current: <8MA6. Standby current: <0.3MA7. Sleep current: <50UA8. Charging current: >200mA9. Standby time: >100 days10. Charging time: 2-3 hours11. Lithium battery capacity: 450mAh12. Sustainable working hours: >30 hours13. Lithium battery life: 3 years14. Button force: 80+/-10g15. Button life: 5 million clicks16. Operating temperature: -10 to 55 degrees Celsius17. Charging port: Micro USB interface18. Not just a protective case, built-in bluetooth keyboard, more powerful19. Bluetooth chip, fast speed, low power consumption, stable20. Precise cut for easy access to all buttons and ports, giving you smooth operation21. Touchpad, bracket and pen tray function, easy to use22. Dimensions: 25.9x20x2.2cm23. Weight: 715gNote: The product does not include tablet PC.