Anyway, i wouldn't trust Sennheiser's choice of cables. They wear out quickly. Actually, they (the plastic/rubber mantling which is very weak) easily tear off at the connection point between the cable and the plastic housing of the volume control, and also the buds itself. I went through an expensive pair of CX 400-II to find out about this issue. And i'm careful with my stuff...

Sound is very good, build quality abysmal. I've switched to the very cheap Sennheiser ones that were given along with my (dead) Trekstor Vibez, and those somehow still hold together without issues.