Product specifications:
1. Charging time: about 2 hours.
2. Standby time: 5 days.
3. Music time: about 4 hours.
4. Headphone material: plastic.
5. Channel: 2.
6. Bluetooth version: 5.0.
7. Battery type: polymer lithium ion battery.
8. Headphone battery capacity: 3.7V 43mAh.
9. Charge box battery capacity: 3.7V 800mAh.
10. Waterproof performance: IPX4.
11. Transmission radius: 10m.
12. Dustproof performance: IP6X.
13. Headphone net weight: 51g.
14. Complete set weight: 160g.