1. Interface type: 3.5mm stereo. 2. Product size: 38x6mm. 3. Gold-plated plug, the outer layer of the wire is woven with fiber material, the conductor is enamelled copper wire, the transmission effect is good, and the high fidelity transmission loss is low. 4. The outer casing is made of aluminum alloy oxidized outer casing and does not fade. 5. The plug is designed for a single bend and is suitable for more scenes. 6. For mobile phone, car AUX interface, laptop, headset, Bluetooth speaker, TV and other devices.