Works with 4.4mm jack equipment, 4.4mm male to 3.5mm female adapter, allows you to connect headphones to audio devices. Made of oxygen-free copper wire, ensuring high-fidelity transmission of audio signals, depth, and resolution. Reduces the possibility of wire oxidation and accurately restores music details. Gold-plated pure adapter helps protect sound transmission and resolution from interference, delivering lossless sound quality. Compact and portable design, widely compatible with earphones, headphones, and home audio equipment such as amplifiers, mixing consoles, home theater systems, AV receivers, and karaoke systems. Available with straight or bent plug; grip treads for easy plugging and unplugging. Material: tinned copper wire Color: black Package Contents: 1 x Adapter Audio Cable Only the above package content is included; other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture to appear slightly different from the actual item. Measurement error allowance is +/- 1-3 cm.