Sony MDR-XB400/VLT XB Series On-Ear Headphones (Violet) 30mm diaphragms for deep, powerful bass (5-22KHz) Direct vibe structure for superior bass response Pressure relieving foam earpads for long-term comfort Slim, Swivel folding style for portability Y-type, flat, tangle-proof serrated cord (Approx. 4 ft / 1.2 m)Specifications