B20 Magnetic Suction Charging Bone Conduction Wireless Swimming Earphone(Red)

1. Bluetooth version: 5.02. Support protocol: A2DP v1.3, AVRCP v1.5, HPF v1.6, HSP v1.23. Noise reduction function: CVC6.04. Working frequency: 20HZ-20KHZ5. Battery: 200 mAh lithium battery6. Music playback time: 4-5 hours7. Talk time: 5-7 hours8. Standby time: 120 hours9. Charging time: 1.5 hours10. Charging port: magnetic11. Wireless transmission distance: 10-15 meters (open place)12. IPX8 waterproof rating, safe and reliable use