1, Standard Bluetooth 5.0 interface
2, Working Distance within 10 meters
3, Modulation Method: GFSK
4, working voltage: 3.0-4.2V
5, working current: <2.5mA
6, standby current: <0.3mA
7, sleep current: <40uA
8, charging current: >200mA
9, standby time: >100 days
10, charging time: 3-4 hours
11, lithium battery capacity: 250mAh /450mAh (backlight)
12, sustainable working hours: 100 hours
13, battery life: 3 years
14, button force: 80 ± 10g
15, button life: 5 million hits
16, working temperature: -10 - +55 degrees
17, charging method: TYPE C