But I find them both from the sound, and the robust design just awesome. The cable can not break as in the earphones from Sennheiser expected, because these earphones are processed here simply robust. In addition, the red cable looks really stylish. ;) The headset use when making calls working properly. The only slight drawback is that you can just push pause when listening to music or play with the button. Anyway, I would have discovered (neither in the manual nor the Internet) any combination, which will rewind a song forward.
But price-performance default, they are just great and they also processed completely high. All in all a great acquisition. I can only recommend. :)