1. Chip: Blue News
2. Bluetooth version: 5.0
3. Material: ABS + PCABS + Plating + Food Silicone Ear Cap
4. Effective straight line distance: more than 10 meters
5.Speaker: Copper ring 8mm
6. Battery: Headphone 55mah, charging chamber 320AM
7. Play time: 4-5H
8. Standby time: 120H
9. Fully charged time: about 0.5 hours
