I21 Sport Earphone Wireless Bass Sports Handsfree Headphones Stereo Dual Headset Earbuds TWS

Specification:

1. Bluetooth 5.3+ER/BDR
2. Chip: Jerry 6976d 
3. Headphone capacity 45mA, charging compartment capacity 400mA 
4. Music playback time: 5-7hours, charging times: 3 times 
5. Speaker unit: Φ 10mm 32Ω
6. Pause/Play, Volume Increase/Decrease, Previous/Next Song
7. Dual ear call, automatic pairing when turned on
8. Waterproof grade: IPX6
9. Hi Fi sound effect, chip intelligent noise reduction, 
10. Triple digital display function, 
11. TYPE C charging port, private model patent, 
12. Color: black/red