HAMTOD CS121 Stereo TWS Wireless Bluetooth Earphone(Black)

1. Bluetooth version: 5.12. Effective distance: about 10m3. Frequency response: 20Hz-20KHz4. Headphone battery: 40mAh/3.7V5. Charging box battery: 320mAh/3.7V6. Music time: about 6h7. Talk time: about 4h8. Charging time: about 2h9. The number of times the headset can be charged by the charging box: about 3 times10. The ergonomic design fits closely with the headset, and you can enjoy a comfortable experience even if you wear it for a long time.11. 30 hours of strong battery life, easy and fast fingertip touch.12. LED digital display, the power is clear at a glance.13. Adopt Type-C charging interface, fast charging.14. IPX5 waterproof and dustproof, the sound quality is always the same.