M1S Bone Conduction Stereo Vibrator Speaker Bluetooth Earphones(Green)

1. Bluetooth version: V5.3+EDR 2.Speaker type: bone conduction 3. Oscillator frequency: 20Hz-20KHz 4. Impedance: 32 ohms 5. Sensitivity: 85dB/mW 6. Waterproof rating: IPX 6 7. Play time: about 7h 8. Battery capacity: 150mAh 9. Play time: about 6-8h 10. Standby time: about 150h 11. Charging time: about 1.5h 12. Frequency band: 2.4GHZ 13. Bluetooth protocol: A2DP1.3 AVRCP1.5 HFP 14. Weight: about 23g Features: 1. Dual silicon microphones, tuning vocal details 2. Intelligent recognition of noise reduction environmental sound 3. Upgrade the chip to maintain high-definition calls 4. IPX6 level waterproof, double-layer mesh structure, blocking rain raids, nano hydrophobic coating, isolated from sweat penetration 5. Automatic coiling and folding, easy to store and carry