1. Wirelessly transmit phone call from mobile phone to car FM Stereo system
2. Switch to Hands-free mode automatically from music playing status when receiving call.
3. Built-in Microphone.
4. Supports music playing from USB/Micro SD card
5. Detect and display the voltage of Car Battery when power on
6. Full 206 channels optional from 87.5-108.0MHz
7. Strong and elegant design with LED frequency display
8. Supports 12-24V
9. Charging Output:5V/2.1A
10. Supports last call redial