It is a product of unsuspected quality and as some have said, it is worth the price of other much more expensive branded headphones! I almost feel like I take others for the family but I will test it a little Quite supple and well oriented headphones are clinging quickly and naturally deep in my ears gently with perfect soundproofing, the maximum does not include around you which is a big plus for me as discreet with my musical tastes! The sporty finish is exemplary, and more bright green makes good and gives a tonic effect that green apple I think, not like the ones I had to return the brand Bluedio .. Acute, bass and midrange everything is for a product of this price or more. Autonomy test, just record which is in Chinese / English, but it is even used without. Good surprise, I advise ears plugged!