The passthrough USB is a nice feature though. Por así decirlo es como que los Sennheiser dan un salto de volumen mayor desde la mitad hasta el máximo, mientras que los Sony lo hacen de forma más gradual. Ive worn other skechers that are as comfortable, but these seem to have a little better support. The mic boom is very flexible but holds its position. It works, but I think Ill need to upgrade to something that doesnt loosen every three days. Top is great, nice and loose. I wear a 71/2 shoe and was worried because they dont have half sizes but I ordered the 7 and it was perfect. The instructions were clear and not difficult to follow. The sound through the earphones are satisfactory. Mic Mute button, and volume slidder on the cable.