It used connect your cellphone or music equipment to car cassette play music while your car is old without ... MP4,DVD,MD,VCD,PDA, etc to your car cassette player and play your hand-held equipment music, so ... products like cellphone , just put iCassette in your car cassette holder, your car will play your celphone music. So ... Logo: Customized OEM/ODM: SupportedCertification: ROHS, CE Car cassette adapter