3.5mm Gold Plated AUX Jack MP3 Interface Adapter for Mazda 2 3 5 Miata MX5 SPD Tribute Prot&eacute;g&eacute; Premacy Models for non-navigation only . Perfectly connect 3.5mm AUX device with car audio. Connection via CD changer Port RoHS Certificate Number: BSTDG13030385RR-4 CE Certificate Number: BSTDG13030385EC-1 Built-in power amplifier chip, static free CD quality clear audio sound Gold Plated 3.5mm AUX Input Jack enhance High Digital Sound quality Package included: 1x Car 3.5mm Gold Plated AUX Interface adapter + 1x user manual