SF109 Tree Texture Bluetooth Keyboard Leather Case For Microsoft Surface Pro 4 / 5 / 6 / 7(Black ...

Features:
1. Not only a protective case, built-in Bluetooth keyboard, more powerful
2. The keyboard and leather case can be separated design
3. Bluetooth chip, fast speed, low power consumption, stable
4. Precise cutting, easy access to all buttons and ports, providing you with smooth operation
5. Support function, easy to use
6. Easy to insert and remove
7. Tablets are not included

Specifications:
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 50 microampere
8. Charging current: more than 200mA
9. Standby time: more than 100 days
10. Charging time: 2-3 hours
11. Lithium battery capacity: 200mAh
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. Working temperature: -10-55 degrees Celsius
17. Charging port: Type-C
18. Weight: 835g
19. Product size: 29.8x21.4x2.2cm