Expert AUX audio cable with a gold-plated bi-directional male connector that prevents corrosion and interference and returns sound quality to its original state. Make a choice of superior oxygen-free copper conductor. Minimize the transmission loss of signals with different sound frequencies Superior sound quality, high fidelity signal transmission, and high performance noise reduction technology transparent, tactful, and clear 3.5mm connector: compatible with most devices, including cars, computers, notebooks, MP3/4 amplifiers, and mobile phones