JOYROOM JR-TL11 Dual-Mic ENC True Wireless Bluetooth Earphone1. Two-way 4-mic array, precise answering, deep environment noise reduction2. Up to 21 hours of total listening time, up to 6 hours of listening time on a single charge3. BT 5. 3 flagship chip, significantly improved anti-interference ability, fast and continuous connection4. 13mm titanium diaphragm dynamic speaker, light weight, large diameter, strong bass, clear treble, lossless audio5. Lightweight semi-in-ear design, a single earphone weighs only 3. 2g, giving you a comfortable and painless wearing experience6. Two-way transmission technology, seamless switching between monaural and binaural modes7. IPX4 waterproof, easily splash-proof, sweat-proof, rain-proof8. Speaker sensitivity: 100+-3dB9. Frequency response range: 20Hz-20kHz10. Headphone battery capacity: 35mAh11. Charging box battery capacity: 240mAh12. Speaker impedance: 32 ohms13. Rated power: 3mW14. Speaker: 13mm15. Music time: 6 hours (70% volume)16. Talk time: 4 hours (70% volume)17. Standby time (connection): about 48h18. Input: DC 5V1A19. Charging input port: Type-C20. Cycle times: about 2. 5 times21. Headphone charging time: about 1. 5h22. Charging time: about 1. 5h23. Waterproof grade: IPX424. Shell size: 50. 0x50. 4x23. 0mm25. Headphone size: 30. 0x16. 5x17. 1mm26. Material: ABS27. Net weight: 35g