YCS Basics 3.5mm Smartphone TRRS Headset To TRS Headphones Adapter (Removes the microphone channel) Convert your smartphone headset into regular headphones (no microphone) 4 conductor 3.5mm (1/8") TRRS (tip, ring, ring, sleeve) female connector 3 conductor 3.5mm (1/8") TRS (tip, ring, sleeve) male connector Essential adapter when using standard headphone / auxiliary extension cables 9-inch black adapter cable; gold plated connector