24K Gold Plated for better sound quality and less loss Input: 3.5mm 4-position female(TRRS) for headset or earphone Output 1: 3.5mm 3-positiion （TRS)male for Headphone Jack on your PC/Laptop Output 2: 3.5mm 3-position (TRS) male for Mic Jack on your PC/Laptop Oxygen-free copper provide maximum's conductivity and durability Flexible cable length 20cm Better Protection: Modularization