M1S Bone Conduction Stereo Vibrator Speaker Bluetooth Earphones(Green) Filter-More Brand Cases Carton Size 26cm * 22cm

Carton Size 26cm * 22cm * 22cm / 10

the color will not fade after washing

and the inner layer is made of OFC wire

40HQ: 1276 cartons * 400 pcs = 510400 pcs

which can meet the transceiver function at the same time

M1S Bone Conduction Stereo Vibrator Speaker Bluetooth Earphones(Green) Filter-More Brand Cases Carton Size 26cm * 22cm1. 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