1. Chip: Lanxun
2. Bluetooth version: V5.0
3. Material: ABS+PCABS+plating+food silicone ear caps
4. Effective straight-line distance: more than 10 meters
5.Speaker: copper ring 8mm
6. Battery: earphone 55mah, charging compartment 350AM
7. Play time: 3-4H
8. Standby time: 120H
9. Full charging time: about 0.5 hours
10. Color: white, black