1. Wireless transmit phone call from Bluetooth mobile phone to the car FM stereo system.<br />2. Built-in FM transmitter・ full frequency: 87.5-108.0MHZ.<br />3. With built-in microphone and automatically calling-number system<br />4. Supports USB disk and SD card・A2DP function<br />5. With 3.5mm line-in jack・ support external audio devices.<br />6. Switch to Hands-free mode automatically from music playing status when receiving calls<br />7. Supports 4 loop modes: Repeat all・ Random・ Repeat one・ Folder・<br />8. 5 EQ for optional: Natural・ Rock・ Pop・ Classic・ Jazz<br />9. USB charging port for charging iPod/ iPhone・ iPad and other mobile device. (output: DC 5V/2.1A).<br />10. Support 12-24V voltage from the car cigarette lighter.<br />11. Strong and elegant design with LCD screen display・ just support number displaying.<br />12. Flexible metallic hose adapted for any type of autos.<br />13. With infrared remote control・ easy operation<br /><br />Using FM Transmitter function:<br />1. Plug the FM transmitter into your vehicle s cigarette lighter or power port.<br />2. Tune your radio to an unused FM frequency・ then match the same frequency of this unit.<br />3. Insert a USB flash drive or SD card which containing MP3 files into USB port or memory card slot of this unit accordingly. It will play and transmit the MP3 files automatically.<br />4. Line-in function: Use the provided audio cable to connect an MP3/MP4 players or another external device to the AUX input of this unit. When using this function・ please stop playback of USB or memory card・ and all functions will be controlled by the external device.<br /><br />Using Bluetooth function:<br />1. Using Bluetooth for the first time・ you need to pair your mobile phone with this unit. Activate your mobile phone's bluetooth function・ then search new device. When the mobile phone detects this unit (named as "BT67")・ please pair and connect by using the original password "0000"<br />2. In the music playing mode・ when there is an incoming call・ this unit will automatically switch to telephone mode.<br />Note: The Bluetooth indicator light which on the top of the screen will be stop flashing after the Bluetooth connected with your mobile phone.