Mdr-nc500d


Sony MDR-NC500D cancels 99% of Noise - a World's First

Sony MDR-NC500D cancels 99% of Noise - a World's First

The Sony MDR-NC500D promises to cancel 99% of ambient noise. Sony says that the MDR-NC500D is the first to use digital techno...

Mar 13 2008, 6:05am CDT