X-11BS Skin Plain Texture Detachable Bluetooth Keyboard Tablet Case for iPad Pro 11 inch 2020 / 2018, with Pen Slot & Backlight (Blue)

1. Bluetooth 3.0 standard interface
2. Effective operating distance: 10 meters
3. Modulation method: GFSK
4. Working voltage: 3.1-4.2V
5. Working current: about 3.0mA
6. Standby current: about 0.3mA
7. Sleep current: about 0.1mA
8. Charging current: about 200mA
9. Standby time: about 95 days
10. Charging time: about 2 hours
11. Lithium battery capacity: 400mAh
12. Sustainable working time: about 76 hours
13. Lithium battery life: 3 years
14. Button force: 50-80g
15. Key life: 3 million clicks
16. Working temperature: -10-+ 55 Degrees Celsius
17. Product material: skin-like plain weave + TPU pen slot shell