The black ATH-M40x Monitor Headphones from Audio Technica are designed for use in studio tracking and mixing and well as for DJ monitoring applications. They feature 40mm Neodymium drivers with copper-clad aluminum voice coils tuned for a flat response. The headphones have a circumaural, around-the-ear design that provides sound isolation in loud environments. The ear cups on the ATH-M40x can be swiveled up to 90 degrees, allowing for single-ear monitoring. The headphones have a detachable single-sided cable system, and both coiled and straight cables are included. When not in use, the ATH-M40x can be folded down and stored in the included carry pouch.ATH-M40X Specs:Open/Closed: ClosedFit Style: Circumaural (Around the Ear)Driver Size: 40mmFrequency Response: 15Hz-24kHzImpedance: 35 ohmsCable Type: Straight/CoiledWhat's In The Box:Audio-Technica ATH-M40x Monitor Headphones (Black)3.9 to 9.8' (1.2 to 3 m) Coiled Cable9.8' (3 m) Straight Cable1/4" Screw-On AdapterCarry PouchLimited 2-Year Warranty1-Year Extended WarrantyENJOY COVERAGE FOR THREE YEARS!