Built-in fuse, can better protect the equipment Using bluetooth master chip, bluetooth version 5.0, high-speed transmission without distortion and high-definition sound quality With unlimited music transmission function Using 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 time For models of different , according to the ports reserved at the back of the original car's main engine, equipped with different connectors The product uses a wide range of voltage input to adapt to different use environments Lightly press the function button to change song, long press the function button for two seconds to switch to the previous song If the call comes, tap the function key to answer the call. If you need to hang up, tap the function key to hang up The product adopts high-end bluetooth module with noise reduction filter function, and the product uses digital audio processing to restore HIFI sound quality Product Descriptions: Name: Car Audio Bluetooth Adapter bluetooth version: 5.0 Voltage: 5-12V Cable length: . 30 cm Microphone cord length: 1.5 meters Fit for For For For SMART 451 Colour: black Material: plastic Package Contents: 1 x Car Audio Bluetooth Adapter 1 x Microphone Only the above package content, other products are not included. Note: Light and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.