new and high quality.Made of high quality material, and practical to use Function via Bluetooth-enabled devices.No functional limitations of the car radio Allows you to connect an external audio source With the improvement of wireless technology and the subsequent wireless transmission is the trend of , Adopt Bluetooth 5.0 protocol, backward compatible with 2.0 3.0 4.0 other versions of Bluetooth protocol, can support common MP3 format audio, also support for WMA, for WAV, for FLAC, and other high-quality audio format decoding, non-general ordinary Bluetooth function, can support DSD Large-capacity transmission, stable data transfer between devices, fidelity, designed for music enthusiasts.in addition, you can use watching , map navigation, etc. Installation: Plug into the CD player Jack (please confirm corresponding socket), mobile phone is connected with the Bluetooth module,aux audio source selection, you can play mobile phone music. Fitment: For C2 2005 + // RD4 For C3 2005 + //