1. Wireless transmit phone call from Bluetooth mobile phone to the car FM stereo system.2. Built-in FM transmitter， full frequency: 87.5-108.0MHZ.3. With built-in microphone and automatically calling-number system4. Supports USB disk and SD card，A2DP function5. With 3.5mm line-in jack， support external audio devices.6. Switch to Hands-free mode automatically from music playing status when receiving calls7. Supports 4 loop modes: Repeat all， Random， Repeat one， Folder，8. 5 EQ for optional: Natural， Rock， Pop， Classic， Jazz9. USB charging port for charging iPod/ iPhone， iPad and other mobile device. (output: DC 5V/2.1A).10. Support 12-24V voltage from the car cigarette lighter.11. Strong and elegant design with LCD screen display， just support number displaying.12. Flexible metallic hose adapted for any type of autos.13. With infrared remote control， easy operation