HIVI AW-51 Bluetooth Neckband In-Ear Headphone

Parameter:
Bluetooth version: V5.0
Play time: 8H
Waterproof rating: IPX4
Frequency response range: 20HZ-20KHZ
Speaker sensitivity: 90 ± 3dB
Microphone sensitivity: -42 ± 3dB
Working distance: 10M
Product net weight: 18 ± 2g

Packaging accessories:
Headphone * 1
USB cable * 1
Eartips: 3 pairs
Ear wings :3 pairs
1 storage box