Problem longevity but quality

So I bought, for the second time, these Philips headphones. Overall, a very good sound quality, but obviously proportional to that of the song. The only problem is perhaps their longevity as my pair precedence, the right earphone (always the same) no longer works. The second was not long in general. Otherwise, too, this kind of problem ranging uses, for example on my pc, where a listener sometimes not. But nevertheless a life of 9 months for this pair, which remains really not bad. It will be a great 3 star.