X16 Bone Conduction Headphones, IPX8 Waterproof Bluetooth 5.4 Open Ear Headphones with 32G MP3 Memory for Swimming, Running, Cycling – Swimming Headphones Underwater

Chip and model: BT8922B
Bluetooth version: 5.4
Battery: 170mAh
Speaker: 14Ω
Play time: >5H
Standby time: 96H
Charging time: 2h
Function: IPX8