Ear-hook Digital Display Car Single-ear Bluetooth Headset

Original factory page on 1688: https://detail.1688.com/offer/654038282696.html

Bluetooth protocol:5.0
Transmission range: 10 meters
Waterproof performance: daily waterproof
Whether it is single-eared or double-eared: single-sided hands-free
Battery life: more than 8 hours
Usage: ear hanging type
Style: retro style