Clip-on Bluetooth Headphones Digital Display Air Conductive Technology 1. Bluetooth chip: Jerry 6973 2. Bluetooth version: V5.3+EDR 3. Distance: 10 meters 4. Listening time: approximately 30 hours 5. Battery capacity: 150mAh 6. Wireless frequency: 2.4GHz 7. Supported protocols: A2DP1.3HFP1.6HSP1.2AVRCP1.6D11.3 8. Charging voltagecurrent: 5V1A 9. Charging time: approximately 2 hours 10. Standby time: 200 hours 11. Speaker impedance: 13mm 32μm 12. Microphone sensitivity: -42dB 13. Comfortable even after prolonged wear, large-capacity battery for extended use, with real-time battery level display 14. Utilizes an acoustic cavity structure combined with digital sound enhancement technology to deliver high-quality holographic 3D stereo sound, with powerful bass, clear treble, and delicate vocals. 15. Directional sound transmission technology efficiently focuses sound waves, ensuring clear, directional sound delivery and avoiding sound leakage. 16. High-definition calls, built-in ENC noise cancellation, using a silicone microphone, automatically reduces noise, distinguishing between human voice and background noise to guarantee clear calls, like a face-to-face conversation. 17. Waterproof and sweatproof, high-sealing protection design, XP6 waterproof rating, fearless of sweat and rain. 18. TYPE-C charging port for convenient fast charging. 19. Earphone weight: 9g 20. Earphone dimensions: 3.5x3.0x1.1cm