The 3.5mm audio cassette is designed for who has a cassette player in his car but wants to play Disc or MP3. Stereo mini plug connects to your portable player's headphone output to channel-rich digital audio through your existing car stereo. Works with most portable CD and MD player. This adapter is ideal for use in cars - Color: Black - Play your favorite music through your car's stereo system with this cassette adapter - Works with MP3 CD MD DVD Players iPod PSP NDS etc - Comes with 3.5mm audio adapter that allows you to connect any music source with 3.5mm audio jack - Cable Length: 70cm