The bass does not break up and hits clean, but is not quite as good as the QC35. A little heavy but well made. Why does it need location contacts etc? They are doing a data grab. apoyar el pie para caminar será insoportable. I forget I’m even wearing. My vivoactive does a great job at this. I got the khaki suede, which looks in real life just as it does on my computer. I originally ordered 11 in the blue and went to a 10 this time. For the price, get the Sony ECM 44. Respecto a la calidad, me parece muy buena y confortable.