1. Bluetooth version: 5.1
2. Standby time: 60 days
3. Use time: 4H
4. Battery capacity: charging compartment 250mAh
5. Automatic pairing, connecting when opening the pop-up window
6. One-key operation, easy to use
7. The all-metal cavity structure effectively isolates environmental noise
8. Touch control operation, call and listen to the song with your heart