In the beginning I came across these headphones here and the Xperia Arc S, so does not sound bad. The Grauß And arrived then, as the headphones supplied. This Kophhörer are processed very very cheap and the cable break probably, at the slightest tension.
The headphones also sit very uncomfortable and the worst is the sound grottenschlecht more than 2 seconds and you can call the Ohrenartzt. So please do not buy even if they are quite cheap I can for 10 anything else with have better quality. For an inferior product will hardly find. Big disappointment from Sony.