100% copper wire core to provide you with high-speed and stable signal transmission and lossless digital sound quality. High-Quality Aluminum is more wear-resisting and corrosion resistance, enhancing its anti-interference ability. Allowing you to enjoy clear and fidelity sound quality and a rapid filling experience. The lightning to 3.5 mm headphone jack adapter is built with an upgraded chip to read data fast and ensure the stability and fidelity of sound transmission, giving you a fantastic music trip and experience when using this phone aux adapter. It supports controlling music volume and pauses. Whether you are on the road, running on the road, or driving home, you can easily carry and use this headphone adapter to extend your leisure time and take up almost no space.