Ear Clip Type Sound Conduction Concept Bluetooth Earphone With Digital Display Charging Compartment 1. Bluetooth version: V5.3 2. Call distance: about 10 meters 3. Battery capacity: earphone 50mAh, charging 300mAh 4. Charging port: Type-CUSB-C 5. Charging voltage: 5V 6. Talking time: about 10H 7. Play music: about 8H 8. Material: ABS 9. Speaker diameter: 12MM 10. Speaker impedance: 32 ohms 11. Speaker diaphragm: PET 12. Call sensitivity: 42dB 13. Earphone distortion: 1K5% 14. Magnet type: chintie boron N40 15. Charging compartment size: about 6.5 x 4.4 x 4cm 16. Weight: about 62g Features: 1. Ear clip design, wear stable and not fall off, no need to go into the ear, not pick the size of the ear 2. HIFI-level sound quality, high-frequency translucent, mid-frequency delicate, low-frequency thick 3. Double noise reduction, sponge fidget technology, automatic identification of human voice and noise, improve clarity 4. Master-slave switching, can be used in any single ear 5. Bluetooth 5.3 chip, signal stability, data transmission response quickly, anti-interference is stronger 6. Multi-process design, tight waterproof, running sweat, rain are not afraid of 7. Sensitive buttons, convenient operation