Features: 1.12pin bluetooth AUX?IN adapter, perfectly fit 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 pad to bluetooth module, and choose Aux from your radio, then you can use your phone to play music through car speakers. 5.Built to meet standard specification, strictly follow factory quality control. Specification: Item Type: Bluetooth AUX-IN Cable_x000D_ Material: ABS_x000D_ Fitment:_x000D_ (do not fit for V and RCD200 )_x000D_ Fit for Delta 6/7_x000D_ Fit for Premium 6/7, R100/110, RCD300/500, RCD-210/310/500_x000D_ Fit for RNS-300/310/510_x000D_ Fit for RNS MFD2 CD/DVD_x000D_ Compatible: Compatible for Seat Radio CD-1/2/3, PN-1/3, RNS-4, SE359/360_x000D_ Wiring:_x000D_ The red wire connects to the positive pole_x000D_ The black wire is connects to the negative pole_x000D_ The signal receiving connector connects to the radio signal interface_x000D_ (Your CD stereo must have the "AUX" button!!!) PackageList: 1 x Bluetooth AUX-IN Adapter 1 x Microphone