1. Bluetooth chip: BlueTrum 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. Adopt ear clip design, wear stable and not fall off, no need to enter the ear, not pick the size of the ear
2. HIFI-level sound quality, high-frequency translucent, mid-frequency delicate, low-frequency thick
3. Skin-friendly silicone elbow, bending without deformation, comfortable and sensation-free wearing
4. Fully enclosed sound cavity design, daily waterproof and dustproof, easy to clean up
5. Bluetooth 5.3 chip, low loss, fast response to data transmission, anti-interference stronger
6. Left and right ear wear, two headphones only have binaural TWS function
7. Touch operation, convenient and quick