Overall:Pros: Price, Quality, Battery, BT, decent bassCons: Smells like cigarette Ash, Hissing noise on ANC and no musicFinal thoughts: If the primary goal is Noise cancelling, maybe these are not the best option. - Both right and left buttons are near silent. Im stuck with a lemon. Im buying another one today to replace the other brand that fell apart. Die Adiletten an sich sind kult und nachdem meine letztes Paar verschwunden war, war für mich klar, es müssen neue her. My only criticism is that the switches are rather small and fiddly and the lettering on the product is hard to read especially in subdued lighting. With noise cancelling off they sound excellent crisp sound great bass the works. I unboxed it and was immediately overwhelmed but once I got into the groove it only took me about 30 minutes. Go back to the last revision and molding. The footbed is the proper size.