For transmitting audio data to FM Stereo receiver Ports: microSD card slot, USB and audio jack Bluetooth: V2.0 + EDR, Class 2 Supports: A2DP (Advanced Audio Distribution Profile) USB charging port 5 V/2.1 A Also suitable as hands-free car kit Direct input of microSD Card/USB LED display with frequency information Full frequency selection (87.5 to 108.0 MHz) Connection in the cigarette lighter