http://www.shopclues.com/imported-car-m ... ranty.html Free Car Freshner & Mobile Phone Strap Features: # Supports USB Flash Drive # Switch channels with one key or Remote Control # Memorizing FM Frequencies # Memory Play - Remembers the Current File # 6 Frequency selection # Connectivity with CD / MP3 / DVD Player through Line in # For Flash Memory (usb drive AND SD CARD SLOT only) # Plug FM Modulator into vehicle's 12 Volt adaptor (Cigarette Lighter) # Plug your Flash Memory / usb drive into FM Modulator's USB Port # Select one of the 6 FM Modulator preset stations that a local radio station is not broadcasting on (87.7, 87.9, 88.1, 88.3, 88.5 and 88.7 MHz). # Tune your car stereo to the same FM Frequency as the FM Modulator. # Press the Play button on the FM Modulator. # Music/Audio is transmitted to vehicle's stereo system, making it a complete wireless system. # Press the forward, pause, stop or back buttons to advance, pause, stop or go back one track at a time or use the remote for easy operation. # For use with MP3, CD, DVD Players, I-Pod's, etc. # Plug FM Modulator into vehicle's 12 Volt adaptor (Cigarette Lighter) Using the universal audio cable (provided with the modulator), plug your MP3, CD, DVD player or any other audio device into the FM Modulator's stereo jack.