1. Hands-free call, 3.1A USB / PD ports charging function
2. Echo elimination and noise processing during phone calls
3. FM stereo transmission technology
4. Support USB / TF card
5. Support MP3 / WMA music
6. Auto power off memory function
7. DC 12V-24V power supply
8. FM transmission frequency: 87.5 ~ 108Mhz
9. Voltage detection
10. Colored lights.
