M1S Bone Conduction Stereo Vibrator Speaker Bluetooth Earphones(Black)

1. Bluetooth version: V5.3+EDR2.Speaker type: bone conduction3. Oscillator frequency: 20Hz-20KHz4. Impedance: 32 ohms5. Sensitivity: 85dB/mW6. Waterproof rating: IPX 67. Play time: about 7h8. Battery capacity: 150mAh9. Play time: about 6-8h10. Standby time: about 150h11. Charging time: about 1.5h12. Frequency band: 2.4GHZ13. Bluetooth protocol: A2DP1.3 AVRCP1.5 HFP14. Weight: about 23gFeatures:1. Dual silicon microphones, tuning vocal details2. Intelligent recognition of noise reduction environmental sound3. Upgrade the chip to maintain high-definition calls4. IPX6 level waterproof, double-layer mesh structure, blocking rain raids, nano hydrophobic coating, isolated from sweat penetration5. Automatic coiling and folding, easy to store and carry