This cable features a Bluetooth module and is specially designed for car o systems, serving as a replacement for the KCE-237B Full Speed AUX Input. It is compatible with Alpine, JVC, and radios, provided the device has a matching socket and AUX input functionality. Installation is simple: plug the connector into the back of the radio and connect the red wire to 12V+ and the black wire to 12V-. After installation, select Aux on the radio panel and pair your phone or MP3 player via Bluetooth to stream music. Equipped with Bluetooth 5.0 technology, it ensures stable connectivity and is backward compatible with Bluetooth 2.0, 3.0, and 4.0 devices. The adapter supports high-quality o formats including MP3, WMA, WAV, FLAC, and DSD decoding for enhanced sound performance. This adapter is specifically designed for select Alpine models, including: Alpine 2009 and newer CD players (AUX mode must be set after installation) Compatible with CDE101E, 102E, 105E, CDA-105Ri, CDE-104BTi, CDE-103BT, CDE-102Ri, CDE-101R/RM, CDE-W203Ri, and other Full-Speed devices from 2009 such as CDE-111R/RM, CDE-112Ri, CDE-113BT, CDE-114BTi, CDA-105, CDA-105E, CDA-117Ri, IDA-X301, IDA-X303, IDA-X305, IDA-X311, IDA-X313, IXA-W404R, IXA-W407BT, TME-S370, and select 2007 models when used with the KCE-400BT Bluetooth module. Color: Black Material: ABS Package Includes: 1 x o Cable Adapter 1 x Bluetooth Microphone Note: The product image may slightly differ in color due to lighting and display settings. Measurement may vary by ±1-3 cm.