... noisy , support USB/SD/3.5AUX, compatible with OEM radio and After-Market radio Car mp3 +USB/SD/AUX for V.W/Mazda ... to 8G)3.Control Digital Music Changer from your car radio buttons or steering wheel controls4.Building in high quality MP3 ... to install and use. Compatible with:Toyota, Honda, Volkswagen, Nissan, Ford, GM, Chrysler, Mazda, Hyundai,Subaru, Audi, Skoda,Sony Panasonic Alpine ...