1. Bluetooth hands-free call USB/USB with charging function 3.1A 2. Handle echo and noise during calls 3. Stereo Bluetooth and FM emission technology 4. Supports USB, TF, and Bluetooth 5. Support MP3/WAV music 6. Automatic power failure memory function 7. Cigarette lighter power supply: DC12V-24V voltage power supply 8. Bluetooth version 5.0FM transmission frequency: 87.5-108mhz 9. Voltage detection 10. Colorful atmosphere lights
