Design with its purple cord (after it depends), it isolates noise pretty well and the sound is not too serious, in any case, does not change a lot of my old headphones, and I'm at 4 or 5 points below to sound with JVC, it saves battery. Because they are comfortable going in my ear without foams provided with. Without music, it's pretty amazing to hear such resonance walk or even his heart beat. For cons, I hoped to find something to unpack helmet, out of its plastic shell without breaking the cords at the same level headphones: I had to spend a quarter of an hour trying to open and extract Article, I had cuts on fingers, plastic hull was so hard and difficult to remove headphones that I thought was going to break the cord, trying to extract the plastic that I had to cut with (lots of) strength with scissors. Help!