M-D8 IPX5 Waterproof Bone Passage Bluetooth Hanging Ear Wireless Earphone (Black)

1. Bluetooth chip: BK3266 stereo 2. Bluetooth version: version 5.0 3. Bluetooth distance: about 10 meters 4. Battery: 150MAH 5. Charging time: about 2 hours 6. Talking and listening time: about 8 hours 7. Frequency: 20Hz-20KHz 8. Impedance: 32 ohms 9. Sensitivity: 85dB/mW 10. Waterproof rating: IPX5 11. Electroplated buttons + matte body, four colors, good simplicity 12 Package size: 15.8×10.8×4.5cm 13. Package weight: 71g