Very fantastic quality with nice big drivers that are able to produce a noticeable bass; The sound is very crisp and clear, and probably the best in ear headphones you can get for you money; They seal very nice, and the range on these things is incredible
Not durable at all; This is probably my fourth pair of them because about every 5-6 months they rip and break; I'm about to order my 5th pair under warranty because I have them wrapped in tape and are about to stop working soon