Fingertime T17 TWS Portable Mini In-Ear Wireless Bluetooth Noise Reduction Earphone 1. Bluetooth version: V5.1 2. Bluetooth distance: 10m 3. Battery life: about 4-6 hours 4. Charging type: Type-C 5. Working frequency: 2.402-2.480GHz 6. Upgraded Bluetooth version 5.1, using dual-pass technology, no delay, the signal is transmitted at the same time left and right 7. Using polymer diaphragm to impress the large dynamic circle, immersive music experience 8. ANC active noise reduction function, bid farewell to the external noise 9. The headset is equipped with two modes of noise reduction and environmental monitoring, which can be switched at any time 10. Low-latency technology gives you an advantage in the game, audio and video synchronization 11. ENC call noise reduction, the left and right ears use high MEMS microelectromechanical microphones to eliminate background noise during calls 12. Exquisite and compact, with smooth lines, natural and comfortable, no sense of oppression 13. The left and right are hosts, and any earphone can be connected separately when taken out, and it will be automatically paired immediately after being taken out 14. The headset can be used for 4-6 hours when it is fully charged, and it can be used with the charging box to achieve 22 hours of ultra-long battery life, allowing you to play for a whole day 15. Laser light-sensitive design, highlighting unique personality 16. Small size, easy to carry