Feature:1. Perfect Fitment: Bluetooth aux in cable is replacement forRCD310 RCD510 RNS510, perfect matching.2. High Quality Material: AUX in adapter cable is made of high quality ABS material, wear resistant, lightweight and have a long service time.3. Function: Match your phone or pad to bluetooth module, and choose Aux from your radio, then you can use your phone to play music.4. Original Design: According to the original design, professional manufacturing and not easy to damage.5. Simple Installation: Just plug and play, simple to install, convenient for using, save your time and energy.Specification:Item Type: Bluetooth AUX IN CableMaterial: ABSApplication Range: Replacement for RCD310 RCD510 RNS510(do not fit for RCD200)Replacement for Delta 6/7Replacement for Premium 6/7Replacement for R100/110Replacement for RCD300/500Replacement for RCD-210/310/500Replacement for RNS-300/310/510*Replacement for RNS MFD2 CD/DVD.Package List:1x Bluetooth AUX IN Cable1 x Microphone