Great sound quality but even better is if you sweat buckets in the gym like me (cardio, cardio, cardio x twice a day) then these are perfect. Theres already an audiojack for headphones. Much louder and much better battery life. Como efecto secundario de las características de la suela, cuando te las pones, eres más alto :)))3) DURABILIDAD: puesto que es un modelo hecho de 1 sola pieza, su durabilidad está ligada a la del dibujo de la suela, que es el que proporciona agarre al caminar. I had a pair of clogs for years but they finally wore out as I used them all the time for outdoor work. Easy to operate and it talks to tell whether power and bluetooth are connected. I was thinking to myself well isnt car soap just car soap. The pants are a great length, and just a little snug on my thighs. Los Plantronics, los ATH y los JBL tienen un botón deslizante, haciendo que no tengas que preocuparte por este aspecto. Also because of the tightness, they were super hot, which Ive never had a problem with in a sheepskin slipper.