I called Amazon as the 30 return period was over by two weeks. However, if you listen to mixed types of music, in general these headphones do not disappoint. Oh and the sound quality is out of this world too! Seems to hold its charge for ages. If I want it out of my way, just turn it. So you can see how well they hold up. Problem with the pair I received. The whole reason I stayed away from buying Earbuds was cuz I was worried since they didnt cover(hug) my entire ears like headphones do that outside noise would so easily leak in drowning out my music. I also really like the fact that they have a loop so when youre not using them you can just slip them onto the cord and they wont get lost. I tried to find out what these cheap Chinese sandals were made of at such a low price of $20.