Features: 1. 12-pin Bluetooth AUX-IN adapter, perfect for RCD210 RCD300 RCD310 RNS310 MFD2. 2. Compact size, light weight, this adapter is portable, easy to carry and store. 3. High-quality ABS material, high toughness, sturdy, wear-resistant and durable. 4. Match your phone or tablet with the Bluetooth module and select Aux from the radio, then you can use your phone to play music through the car's speakers. 5. Built to meet standard specifications, strictly follow factory quality control. Product Type: Bluetooth AUX-IN Cable Material: ABS Fitment: (does not fit V and RCD200) Fits Delta 6/7 Fits Premium 6/7, R100/110, RCD300/500, RCD-210/310/500 Fits RNS-300/310/510 Fits RNS MFD2 CD/DVD Compatible: Compatible with Seat Radio CD-1/2/3, PN-1/3, RNS-4, SE359/360 Wiring: The red cable connects to the positive pole The black cable connects to the negative pole The signal receiver connector connects to the radio signal interface (your CD stereo must have the \"AUX\" button) 1 x Bluetooth AUX-IN adapter 1 x Microphone