Buy USB SD AUX MP3 Adaptor and Bluetooth Hands-Free System for RD4, RT3 (Software from 6.x), RT4 Radio for the Following Models: Citroen: C2, C3 (Pluriel), C4 (Picasso), C5, C6, C8, Berlingo,
Digital Music Changer USB SD Aux MP3 Music Interface For Peugeot RD4 RT3 Radio | eBay