Features: 1.Fitment: Exquisite and careful workmanship, high performance, car wireless bluetooth module fits for Alpine KCA 121B AI NET CDA 9857 CDA 9886. 2.Audio Format: Bluetooth AUX IN cable supports common MP3 format audio, and also supports for WMA, for WAV, for FLAC and other high quality audio format. 3.Main Usage: You can match your phone or tablet to the Bluetooth module, select Aux on the radio to play music from your phone through your car's speakers. 4.Easy To Use: Bluetooth 5.0 aux adapter cable, backward compatible with 2.0 3.0 4.0 etc. Plug and play, no complicated operations, simple and quick installation. 5.Premium Material: Car bluetooth module is made of upgraded premium ABS plastic, this cable is wearproof, high temperature resistant and durable in use. Specification: Item Type: Car Wireless Bluetooth Module Material: ABS Fitment: Fit for Alpine KCA 121B AI NET CDA 9857 CDA 9886