Feature: 1. Runs through a device that supports Bluetooth, allowing you to connect to external audio sources. Bluetooth version 5.0, and compatible with other versions of Bluetooth 2.0, 3.0, 4.0. 2. Supports commonly used MP3 format audio, and also supports WMA WAV FLAC and other high‑quality audio format decoding, has an unconventional Bluetooth function, and can support DSD large‑capacity transmission. 3. Match your mobile phone or MP3 pad with the Bluetooth module, then select AUX from the radio, and then you can use your mobile phone to play music through the car speakers. 4. The car radio has no functional limitations and can be streamed from smartphones to car stereos. 5. You just need to plug this into the rear radio, then connect the red wire to 12V+ and the black wire to 12V. Specification: Item Type: Auto Bluetooth AUX Adapter Material: ElectronicsMicrophone Size: Approx. 150cm/59.1in Support Functions: AUX, Bluetooth 5.0, high-quality stereo, support for DSD large-capacity transmission.Fitment: Fit for Pioneer with 2RCA Audio Port Fit for Alpine with 2RCA Audio Port Fit for Kenwood with 2RCA Audio Port Installation Notes: The red power cord is connected to 12V+ The black power cord is connected to 12V- Insert the CD player jack. Package List: 1 x Auto Bluetooth AUX Adapter1 x Microphone