I already have a nice pair of headphone with better sound quality than these , but they be the big one that cover up half you head . if you take those to the gym or go out for a run with they , not only do you look ridiculous , but the sweat just pool up and soak they . so I be in the market for some earbud , but I know from experience that earbud keep fall out and be a royal pain . these be the perfect design , and once you fit they to you head , they will not fall out , and they be so light that you barely even notice they . in short , they be perfect . I do read the below review about how these headphone do not last very long before I buy they . there be two possibility : one be that one of the internal mechanism just fall apart , in which case there be nothing to be do . the more likely possibility be that repeat tug of the wire eventually loosen it from the delicate structure of the headphone . so I simply tie the wire around the headphone and tape it in such a way that even if you tug at the wire , there be no pressure and no possibility of tug the wire loose from the earbud . I 'll let you know how long these headphone last - if they do not last long , then there must be a mechanical problem with these and I would suggest not buy they . UPDATE : I love these headphone , they really have the perfect design . I have read some earlier review about they not last . my theory be that constant tug of the wire would eventually pull they loose from the internal speaker , so to prevent that I tape the wire down on the first day . despite this , they last 3 month until the sound in the left earbud start go on and off , and then finally die , prove that it be simply a cheap internal mechanism that be the problem , not any sort of wear and tear . there be enough similar case as mine that should justify Sony discontinue this product and come out with a model that have some decent durability . if I could change my rating I would give it 1 star .