M1S Bone Conduction Stereo Vibrator Speaker Bluetooth Earphones(Black) Type-Mac Accessories the method is simple and

the method is simple and the test result is accurate

Reliable auto sleep / wake: Built-in magnets instantly wake your tablet when you open the cover and put it to sleep when you close it

and it is also easy to clean

22-level output power (1/1~1/128)

M1S Bone Conduction Stereo Vibrator Speaker Bluetooth Earphones(Black) Type-Mac Accessories the method is simple and1. 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