The adapter-cable converts a large Headphone Stereo plug 1/4" (6.35mm) to asmall stereo 1/8" (3.5mm) Male mini-plug Features: Let mobile phone/laptop audio jack to connect 6.35 microphone/speaker. Made from copper material with gold plated. Use for longer time. The stereo audio cable is designed with a secure connection. Allow you to connect headphones to audio devices such as amplifiers or AVreceivers with 6.35mm socket. Pure copper wire provide maximum's conductivity and durability. Specification: Cable length: 35cm Item weight: Approx.25g / 0.88oz Package size: 12.5 * 8.5 * 3cm / 4.92 * 3.35 * 1.18in(L * W * H) Package weight: 25g / 0.88oz Package List: 1 * 3.5mm Male to 6.35mm Female Converter Cable