1. Bluetooth 5.0
2. Distance of 10-30m (depending on mobile phone)
3. Frequency band range 2.400GHz-2.4835GHz
4. Static current 4.5uA
5. Charging current 320mA
6. Battery capacity: 3.7V/ 850mAh
7. Waterproof, support FM radio, voice assistant, Chinese and English switch, calls automatically answer