M1S Bone Conduction Stereo Vibrator Speaker Bluetooth Earphones, M1S Black, M1S Pink, M1S Red, M1S 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