1. Hands-free call, 3.1A USB / PD port charger 2. Elimination of echo and noise processing during phone calls; 3. FM stereo transmission technology 4. Support USB flash drive / TF card / Bluetooth music player function 5. Support MP3 / WMA format music 6. Automatic power off memory function 7. cigarette lighter power supply: DC 12V-24V voltage 8. FM transmission frequency: 87.5 ~ 108MHz 9. Voltage detection 10. Colorful taillights
