1Ideal Replacement: This wireless aux adapter is specially made for car audio stereo, it's a replacement of Kce 237B Full Speed Aux Input. 2Applicable Model: Bluetooth Aux adapter can be used for Alpine, for Jvc and other radios if only there is socket for our connector and it has Aux function. 3Strong Compatibility: This cable is with Bluetooth module. Bluetooth 5.0 version, and compatible with 2.0 3.0 4.0 other versions of Bluetooth. 4Multiple Audio Formats: Support the commonly used MP3 format audio, but also support the Wma Wav Flac, and other audio format decoding. 5Premium Material: The adapter harness is made of Abs material, which is waterproof and wear resistant, and can support Dsd large capacity transmission. 6Plug and Play Installation: Just plug the connector into the back of the radio, connect the two wires with 12V+(red), 12V?(black).