Sony MDRXB400/BLU Extra Bass Over The Head 30 mm Driver Headphone, Blue 30mm diaphragms for deep, powerful bass (5-22Hz) Direct vibe structure for superior bass response Pressure relieving foam ear pads for long-term comfort Slim, Swivel folding style for portability Y-type, flat, tangle-proof serrated cord (1.2m) with integrated mic and volume control