Clip Ear Stereo External Sound Without Hurting Ear Business Sports Model Bluetooth Earphones(White) Filter-Micro USB Cable 9 inch 2017 A1671 A1821

9 inch 2017 A1671 A1821 (4G Version)

and the work efficiency is improved

Clip stretch width: up to 20cm

Adopting pure copper wire core

Can be used on Windows and Mac systems

Clip Ear Stereo External Sound Without Hurting Ear Business Sports Model Bluetooth Earphones(White) Filter-Micro USB Cable 9 inch 2017 A1671 A18211. Bluetooth chip: Bluetooth 5656 2. Bluetooth version: V5. 3 3. Transmission distance: about 15m 4. Battery capacity: 50mAh 5. Charging time: about 1 2h 6. Use time: about 8 12h 7. Left and right frequency: 20Hz 20KHz 8. Impedance: 32 ohm 9. Sensitivity: 85dB mW 10. Waterproof rating: IPX 5 11. Material: PC+ABS 12. Size: about 3 x 2. 5 x 2cm 13. Weight: about 6g Features: 1. Ear clip design, wear stable and not fall off, no need to enter the ear, not