... Digital CD Chagner with USB. SD adapter1. Auxiliary interface adapter for MP3 player/iPod 2. Perfect CD sound quality, no FM noisy. 3. 16GB USB flash ... car models only set dip-switch and alternate corresponding.Works with: OEM Radio: VW, Audi, Skoda, Seat, BMW, Mazda, Nissan, ... : Clarion, Sony, Alpine, Panasonic, Pioneer, Sanyo, etcInstallation:Package: Car Digital CD Chagner with USB. SD adapter