【Premium Quality】Made of premium plastic and copper material, this aux input cable adapter for alpine is sturdy, not easy to aging and abrasion | 【Premium Quality】Made of premium plastic and copper material, this aux input cable adapter for alpine is sturdy, not easy to aging and abrasion | 【Good performance】Allows you to plug portable MP3 or cell phone directly into compatible head unit and listen to your favorite music | 【Special reminder】In order to use this accessory, the Alpine user manual must indicate AUX | 【Work efficiently】Fast data transmission provides quick and easy file navigation | 【Widely application】Suitable for Alpine head unit must have the "D shaped" connection at the back of the car stereo