Our external USB CD player decoder is designed for cars that do not support playing WAV audio files. This dedicated audio conversion kit works with Aux connections, ensuring compatibility without concern. If audio tracks do not appear when connected, your car may not support music files in WAV format; use our auxiliary audio decoder to play CD music. For AUX connection, verify that your car has an AUX input; note that CD tracks will not display on the car radio screen. For FM connection, enable the FM function and use the "Mode" button on the remote to match the frequency on the corresponding interface. Color: black Material: plastic Due to different production batches, there may be slight variations in product appearance and printed text, but these do not affect functionality. Package Contents: 1 x CD Player Decoder Kit Only the items listed above are included; other products are not included. Note: Lighting reflections and differences in display screens may cause slight variations in the color of the item shown in the image compared to the actual product. Measurement error allowance is +/- 1-3 cm.