Legendary sennheiser quality never looked crisper the new hd 2 series achieves the feat of being elegantly minimalist in design yet tough enough for a life in motion with a sound that lets your mobile device i e your music shine wherever you are plug them in and get the most out of your portable device sennheiser hd 230 the premium mobile experience great sennheiser sound complete control over your music and phone calls tough enough for the street