Audio-Technicas ATH-M20 dynamic stereo headphones offer exceptional clarity & maximum comfort for hours of listening. The headphones low-profile, closed-back design provides superior isolation in high-volume listening situations. Features include: 40 mm drivers, each with a neodymium magnet structure; lightweight, adjustable cushioned headband; gold-plated stereo 1/8" (3.5 mm) connector with strain relief & snap-on 14;" (6.3 mm) adapter; ultra-flexible 10" coiled cable with single-side exit. Closed-back dynamic stereo headphones deliver exceptional clarity Rich bass response with extended high end 40 mm drivers with neodymium magnets & copper-clad aluminum wire voice coils Circumaural design ensures superior isolation Adjustable cushioned headband & lightweight design for maximum comfort 1/8" (3.5 mm) stereo connector & snap-on 1/4" (6.3 mm) adapter Ultra-flexible 10 coiled cable with left-side entry