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
4.0 out of 5 based on 4,274 reviews 
