Product details of JOYROOM JR-BB1 True Wireless Bluetooth Earphone Brand: Joyroom Model: JR-BB1 Material: ABS+PC Headphone charging input: 5V Charging box input: 5V Charging input port: Type-C Headphone charging time: about 1.5h Charging time of charging box: about 1.5h Waterproof grade: IPX4 Headphone standby time: about 48h Music time: about 7h Talk time: about 5h Headphone battery capacity: 35mAh Charging box battery capacity: 450mAh BT version: V5.3 For Android, iP, Windows systems 1. Material: ABS+PC 2. Headphone charging input: 5V 3. Charging box input: 5V 4. Charging input port: Type-C 5. Headphone charging time: about 1.5h 6. Charging time of charging box: about 1.5h 7. Waterproof grade: IPX4 8. Headphone standby time: about 48h 9. Music time: about 7h 10. Talk time: about 5h 11. Headphone battery capacity: 35mAh 12. Charging box battery capacity: 450mAh 13. BT version: V5.3 14. 4-microphone ENC call noise reduction, high-definition call experience 15. Built-in low power consumption chip, the total listening time of the charging box is up to 35 hours 16. Low latency, synchronous picture and sound 17. HiFi PU composite diaphragm, the music is more balanced 18. Low power consumption, stable transmission, strong anti-interference, smoother audio 19. Ergonomic design, comfortable to wear, 4 pairs of earplugs suitable for different ear types 20. For Android, iP, Windows systems