JOYROOM JR-PB1 Jpods Dual Mic ENC Call Noise Reduction Bluetooth Earphones 1. Material: ABS+PC 2. BT version: V5.3 3. Chip: Jieli AD6973D 4. BT audio decoding: AAC, SBC 5. Supported protocols: HSP, HFP, A2DP, AVRCP 6. Working frequency: 2402-2480KHz 7. Headphone capacity: 35mAh 8. Battery capacity of earphone compartment: 320mAh 9. Rated power: 2x5mW 10. Music time: about 8 hours 11. Talk time: about 4 hours 12. Standby time: about 48 hours 13. Charging input port: Type-C 14. Headphone charging time: about 1.5 hours 15. Charging time of the charging box: about 1.5 hours 16. Water resistance: IPX4 17. Built-in low-power chip, with the charging box playing time up to 32 hours 18. 4-microphone ENC call noise reduction, filter out noise to bring high-definition call experience 19. 13mm graphene diaphragm, HiFi super bass quality 20. Ergonomic semi-in-ear design to ensure long-lasting comfort for your ears 21. IPX4 waterproof, rainproof and sweatproof 22. Seamless switch between single and double earphones, connect immediately after opening the cover