1. Bluetooth version: 5.0
2. Communication distance: 10 meters
3. Headphone battery capacity: 50mAh, charging compartment battery capacity: 300mAh
4. Use time: about 4 hours
5. Charging time: about 60 minutes
6. Frequency range: 20-20000Hz
7. Impedance: 16 ohms
8. Power input: DC 5V
9. Small size, easy to carry
10. Ergonomic design, comfortable to wear
11. Widely compatible with IOS and Android mobile phones
