F9 TWS V5.0 Binaural Wireless Stereo Bluetooth Headset with Charging Case and Digital Display(Black)

1. Bluetooth version: V5.0
2. Working distance: 10m
3. Frequency response range: 50Hz-20KHz
4. Sensitivity: 108 +/- 2dB
5. Call time: 5 hours
6. Listening to the song time: 4 hours
7. Standby time: 200 hours
8. Headphone battery: 50mAh
9. Headphone charging time: 1 hour
10. Charging bin: 2000mAh
11. Charging bin size: 8*5.5**3cm
12. Charging bin weight: 82g
13. Single earphone weight: 4.5g