DESC: Sony presents the all-new 2005 MDR-SA5000 Stereo Headphones with nano composite HD driver actualizes 110kHz playback. A 50mm driver unit that reproduces overflows sound, and features 360kJ/ high magnetic force neodymium magnet that produce a powerful bass. High purity 99.9999% 6N-OFC litz wire has a superior signal transmission quality. Unit is light weight with strong magnesium body frame. An ultra stylish design plus a total comfort around your ears.