●Fitment For: The Car AUX audio cable bluetooth is replacement for Alpine KCA-121B AI-NET CDA-9857 CDA-9886 CDA-117, to accurately and conveniently meet your needs.It can accurately and conveniently meet your needs, easy to use, which is a practical accessory.Practical design, this will be the best companion for your journey. ●Bluetooth Function: Match the mobile phone or tablet with the Bluetooth module, and select Aux from the radio, and then you can use the mobile phone to play music through the car speakers.It will Aalows you to listen to music from your phone/pad/mp3 (with Bluetooth function), which is practical to use. ●High Performance: This audio adapter supports DSD large‑capacity transmission, stable and fidelity data transfer between devices. And if the phone comes, you can answer the call, has fidelity for you and is specially designed for music lovers. ●High Quality: The bluetooth AUX adapter is made of premium quality ABS material, durable to use,and accuracy process, ensure for the durability. The connection is more stable and the performance is remarkable, bring you more convenience. ●Professional Design: Adopt Bluetooth 5.0 protocol and is backward compatible with other versions of Bluetooth protocols such as 2.0, 3.0 and 4.0.Moreover,it also support common MP3 format audio, and also support WMA, WAV, FLAC and other high‑quality audio format decoding. ●Bluetooth Function: Match the mobile phone or tablet with the Bluetooth module, and select Aux from the radio, and then you can use the mobile phone to play music through the car speakers.It will Aalows you to listen to music from your phone/pad/mp3 (with Bluetooth function), which is practical to use. ●Fitment For: The Car AUX audio cable bluetooth is replacement for Alpine KCA-121B AI-NET CDA-9857 CDA-9886 CDA-117, to accurately and conveniently meet your needs.It can accurately and conveniently meet your needs, easy to use, which is a practical accessory.Practical design, this will be the best companion for your journey.