Introducing the UPA21 audio adapter cable, crafted with durable aluminum alloy and reinforced with high-strength nylon braid, offering a length of 25cm and weighing merely 10g. Its core comprises enameled copper with a configuration of 4 conductors, each consisting of 14 strands with a diameter of 0.06mm, totaling an outer diameter of 3.7mm. This cable ingeniously splits the signal from a single 3.5mm male connector into two distinct 3.5mm female ports, designated for microphone and headphone functionalities.