JOYROOM JR-TL11 Dual-Mic ENC True Wireless Bluetooth Earphone 1. Two-way 4-mic array, precise answering, deep environment noise reduction 2. Up to 21 hours of total listening time, up to 6 hours of listening time on a single charge 3. BT 5.3 flagship chip, significantly improved anti-interference ability, fast and continuous connection 4. 13mm titanium diaphragm dynamic speaker, light weight, large diameter, strong bass, clear treble, lossless audio 5. Lightweight semi-in-ear design, a single earphone weighs only 3.2g, giving you a comfortable and painless wearing experience 6. Two-way transmission technology, seamless switching between monaural and binaural modes 7. IPX4 waterproof, easily splash-proof, sweat-proof, rain-proof 8. Speaker sensitivity: 100and-3dB 9. Frequency response range: 20Hz-20kHz 10. Headphone battery capacity: 35mAh 11. Charging box battery capacity: 240mAh 12. Speaker impedance: 32 ohms 13. Rated power: 3mW 14. Speaker: 13mm 15. Music time: 6 hours (70 percent volume) 16. Talk time: 4 hours (70 percent volume) 17. Standby time (connection): about 48h 18. Input: DC 5V1A 19. Charging input port: Type-C 20. Cycle times: about 2.5 times 21. Headphone charging time: about 1.5h 22. Charging time: about 1.5h 23. Waterproof grade: IPX4 24. Shell size: 50.0x50.4x23.0mm 25. Headphone size: 30.0x16.5x17.1mm 26. Material: ABS 27. Net weight: 35g Note: Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement. Sold by-YJL official store