Specifications:
1. standard Bluetooth 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
