JOYROOM JR-T03S Air TWS Wireless Bluetooth Earphone1. BT 5. 1, open lid connection, fast and stable transmission2. Play music continuously for 5 hours in both ears, and 25 hours of battery life in the charging box, enjoy a whole day of music3. Polymer composite diaphragm speaker, outstanding, musical instrument details, free to enjoy Hi-Fi sound effects4. Built-in imported silicon microphone, filter outside noise, high-definition call5. Ergonomic design, comfortable to wear6. Wired and wireless dual charging type, it only takes 1 hour to fully charge7. Support protocol: HSPHFPA2DPAVRCP8. Audio decoding: AACSBC9. Corresponding range: about 15m (standard environment)10. Frequency range: 2402-2480MHz11. BT output power: 8dBm12. Sensitivity: 116+-3dB13. Total harmonic distortion: less than or equal to 5%14. Speaker: 13mm15. Impedance: 32 ohms16. Power: 3mW17. Shell battery capacity: 400mAh18. Headphone battery capacity: 30mAh19. Music time: about 5 hours (80% volume)20. Talk time: about 4h21. Connection standby time: about 48h22. Charging time: about 1h23. Wireless charging time: about 3h24. Number of cycles: 5 times25. Charging input: DC 5V1A26. Waterproof rating: IPX527. Net weight: 48g+-2g 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