JS911 OWS Ear-mounted Dual-mic Call Noise Reduction LED Digital Display Bluetooth Earphones Features: 1. Skin-friendly silicone, elastic silk, light and stable, comfortable to wear for a long time 2. Non-in-the-ear design, using directional technology to accurately transmit sound into the ear canal 3. 16.2mm super large dynamic unit restores full sound quality 4. Dual microphone noise reduction for clear calls 5. Bluetooth 5.42, synchronous transmission of videos and games, stable and without delay, no lag 6. Directional HiFi sound transmission technology, music is accurately transmitted to the eardrums, the melody has direction, and the enjoyment is more beautiful. 7. Sensing native dual-unit, sound-absorbing inner cavity barrier design, combined with the fourth generation (Heycute-Acavity) acoustic cavity, to restore the natural original sound of the scene Product parameters: 1. Chip: AB5616C 2. Bluetooth version: 5.42 3. Communication distance: about 10m 4. Signal-to-noise ratio: 84-90dB 5. Impedance: 32 ohms x 2 6. Speaker size: 8mm 7. Unlimited carrier frequency: 2402MHz-2480MHz 8. Wireless frequency response range: 20Hz-20KHz 9. Charging interface: Type-C 10. Battery capacity: 70mAh earphones, 400mAh charging box 11. Charging time: about 2 hours for earphones, about 2 hours for charging case 12. Standby time: 120 hours for headphones, 4 months for charging case 13. Headphone playback time: about 8 hours 14. Headset talk time: about 7 hours 15. Supported protocols: HFPHSPA2DPAVRCP 16. Audio decoding: AACSBCMP3 17. Waterproof level: IPX7 18. Main functions: music playpause, volume increase and decrease, up and down song switching, incoming call reminder, call noise reduction, three-party call voice assistant