1. Material: PC + TPE
2. Bluetooth version: 4.2
3. Battery capacity: 100 mAh
4. Standby time: about 200 hours
5. Music time: about 5 hours
6. Call time: about 7 hours
7. It conforms to the natural form of the human body, fits the neck and is not easy to slip.
8. 10m transmission distance stable connection
9. Waterproof function