usb CD changer USB/SD+aux in CD quality sound control by radio interface/steering wheel easy to install and play USB+SD+AUX IN ... digital CD changer Features: Direct Connection with CD quality sound Without the loss ... -marker Radio:Sony,Panasonic,Alpine,Clarion,Sanyo,Blaupunkt..Install illustration: usb cd changer for V.W skoda audi polo seat passat santana