OTU Gb-01 Neck Hanging Bluetooth Sport Earphones

Sports Hanging Neck .Bluetooth Earphone
Bluetooth version: 5.0
Transmission distance:10-20m
Battery capacity:1000mAh
Standby time:365 days
Continuous playback time: 150 H
Frequency: 2.4-2.480GHZ
Working voltage: 3.4-4.2V
Charging time:2H