For Microsoft Surface Pro3 Pro4 Pro 2017 Pro6 Pro7 Universal Magnetic Adsorption Bluetooth 3.0 Keyboard Leather Tablet Case

1. Bluetooth 3.0 standard interface 
2. Effective operating distance: 10 meters 
3. Modulation method: GFSK 
4. Working voltage: 3.0-4.2V 
5. Working current: less than 2.5mA 
6. Standby current: less than 0.3mA 
7. Sleep current: less than 40uA 
8. Charging current: more than 200mA 
9. Standby time: more than 100 days 
10. Charging time: 2-3 hours 
11. Lithium battery capacity: 350mAh 
12. Sustainable working hours: more than 100 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

Note: Tablet is not included