M1S Bone Conduction Stereo Vibrator Speaker Bluetooth Earphones(Black) Type-Mac Accessories The pen tip is replaceable

The pen tip is replaceable

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

GPS navigation system

the method is simple and the test result is accurate

M1S Bone Conduction Stereo Vibrator Speaker Bluetooth Earphones(Black) Type-Mac Accessories The pen tip is replaceable1. 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