1. This product adopts aluminum alloy shell and anti-oxidation gold-plated plug to reduce the transmission loss of sound quality.2. At the same time, prevent the plug from rust and oxidation. Enameled copper wire conductors made of paint and baking, the output is no noise, no current sound,3. Used to connect audio equipment with 3.5mm interface,4. Suitable for computers, all-in-one computers, notebooks, tablets, mobile phones, sound cards, car AUX interface TVs, , etc.,5. This model can support mobile phone headset microphone functionspecification:Product name: 3.5mm stereo male-to-female headset extension cord 3696 that supports microphone functionInterface type: four-level 3.5mm male x 1colour: blackMaterial: tensile fiber woven meshsize: Package Contents:2 x Audio extension cableOnly the above package content, other products are not included.Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.