This product is an AUX input adaptor for cars with the MPN CTVVGX004, which comes from the Connects2 automobile electronics brand. The cable is suitable for use with a wide range of vehicles, including Volkswagen's Polo, Passat, EOS and Jetta models. It works with a USB connector and hooks up to the car's stereo system, enabling users to connect devices like mp3 players and phones as desired.