Usage Tips:Using bluetooth master chip, bluetooth version 5.0, high-speed transmission without distortion and high-definition sound qualityWith unlimited music transmission functionUsing bluetooth transmission, you can say goodbye to messy, and you can also online. In the era of streaming media, various online APPs are quite convenient, and the audio source is updated in timeFor models of different , according to the ports reserved at the back of the car's main engine, equipped with different connectorsThe product uses a wide range of voltage input to adapt to different use environmentsLightly press the function button to change song, long press the function button for two seconds to switch to the previous songIf the call comes, tap the function key to answer the call. If you need to hang up, tap the function key to hang upThe product adopts high-end bluetooth module with noise reduction filter function, and the product uses digital audio processing to restore HIFI sound qualityCompatible:For C2 2005 + // RD4For C3 2005 + // RD4 C4 2005 + // RD4 C5 2004 + // RD4For C6 2005 + // RD4For C8 2004 + // RD4. Berlingo 2005 + // RD4For Jumpy 2007 + // RD4For Synergie 2005 + // RD4For Expert 2007 + // RD4For 207 2006 + // RD4For 307 2005 + // RD4For 307SW 2005 + // RD4For 307CC 2004 + // RD4For 2007 + // RD4For 407SW 2005 + // RD4Name: Car Audio Bluetooth Adapterbluetooth version: 5.0Voltage: 5-12VCable length: . 30 cmColour:blackMaterial:plasticPackage Contents:1 x Car Audio Bluetooth Adapter