A. This is a mini audio signal cable specially designed for car subwoofer modification. It is made of pure copper, which can effectively ensure the stability and high fidelity of audio signal transmission, allowing you to enjoy clear and pure sound quality even in the car environment. B. Its 5 - meter length design is very user - friendly, which can meet the connection needs of audio devices at different positions in the car. No matter where your car audio power amplifier is installed, it can be easily connected. The unique elbow design not only facilitates wiring in narrow spaces, avoiding signal transmission problems caused by cable bending, but also makes the wiring more beautiful and tidy, making the layout of the car audio system more reasonable. C. The charging type is a common car charger, and the charging method is wired charging. This common and stable charging method can relieve your concerns about charging compatibility issues. As long as there is a car charging port, you can charge the relevant devices at any time, providing continuous and stable power support for your in - car music experience. D. Whether you are on a long - distance drive or daily commute, it can create a good in - car music space for you, allowing you to fully enjoy the pleasure brought by music during the journey.