TG911 Bluetooth 5.0 Mini Invisible Intelligent Noise Reduction True Wireless Stereo Bluetooth Earphone (Black)

1. Rated power of earphone speaker: 3mw
2. Speaker size: 13mm in diameter
3. The frequency response range of the speaker: 20-20000HZ
4. Speaker sensitivity: 99db
5. Speaker impedance: 32?? ohm
6. MIC size: 4*13mm
7. Headphone standby time: 4-5 hours of playing music
8. Battery voltage: 3.7V
9. Charging time of the charging compartment: about 1 hour
10. Earphone charging time: about 1 hour
11. Bluetooth frequency: 2.4G, Bluetooth version: 5.0, transmission distance: about 10m
12. Battery capacity: earphone 50MAH, charging compartment 500MAH
13. Automatic connection after opening the box, easy to use
14. IPX4 class waterproof design for life
15. Fingerprint touch, simple operation
16. Compatible system: IOS, Android
17. Ergonomic design, comfortable to wear
18. The left and right ears are equipped with dual feedback microphones for clearer calls
19. Charging compartment size: 6.1x4.1x3.5CM