Small and light in appearance, easy to carry. Plug and play, simple operation, convenient and quick to use. Widely compatible with 3.5mm interface devices such as car audio and earphones. Built-in DAC decoding chip, increase digital signal transmission without current noise, high-fidelity sound quality. Aluminum alloy shell and nylon braided wire are used, which are strong and tear-resistant, not easy to fluff, wear-resistant and oxidation-resistant, and durable.