From the Manufacturer
Lightweight and compact, the Sony MDRQ33LP over-the-ear headphones are comfortable enough to wear for extended periods of time and include an exceptionally large (30 millimeter), dome-type driver unit for deeper bass and overall superior sound quality. A Neodymium magnet, far more powerful than conventional Samarium cobalt or aluminum magnets, provides maximum energy in minimum size. The MDRQ33LP's oxygen-free copper (OFC) cord minimizes resistance to further maximize sound.
Interchangeable headphone caps let you change colors in an instant--two are provided with the unit, and a total of 12 colors are available. In addition, the MDRQ33LP's design complements the cosmetics of selected CD and MD Walkman portables.