The Philips USA PH-62050 CD/MP3/MD-To-Cassette Converter lets you play CD, MP3 or MD players in your car's cassette deck via a direct plug into your portable audio player. It's powered by your car's own electric system so there's no need for batteries, and it produces a clean sound without the static found in most FM transmitters. Product Description This CD-to-Cassette Adapter allows you to play cassettes through your CD player, Mp3 player, or any other audio media player on your cassette deck. Giving a high quality and clear sound.