Open-ear wearing,hear outside voices while listen to musics
Transmit sounds through cheebone,no hearing damages.
Titanium neckband,good for sport,fitness and driving etc.

Specifiations:
Bluetooth chip: CSR8635
Bluetooth version: 5.0
Effective range: 10M
Frequency range (Hz)﹕20HZ--20KHZ
Impedance (ohm)﹕8Ω
Receiving sensitivity (dB)﹕88dBm
Battery: 200mAh Power battery
Talking time(H)﹕6H
Music time(H)﹕6H
Standby time(H)﹕10 days
Charging time(H)﹕2H
USB port: MIC USB
Product size﹕139*104*60mm
Product weight﹕36g