It used connect your cellphone or music equipment to car cassette play music while your car is old without CD and bluetooth. How to play your cellphone music while there no bluetooth in your old car?Our iCassette can connect your MP3,MP4,DVD,MD,VCD,PDA, etc to your car cassette player and play your hand-held equipment music, so you can enjoy the Hi-Fi music in your old car!MP3 ,MP4 and your ...