Audio-Technica ATH-M40x Headphones Features at a Glance: Robust build quality and cutting-edge technology 15Hz-24kHz frequency response 40mm drivers with rare-earth neodymium magnets and copper-clad aluminum wire voice coils Tuned for flat response and superior accuracy across the entire frequency range Circumaural design contours around the ears for excellent isolation in loud environments 90-degree swiveling earcups for easy one-ear monitoring Professional-grade earpad and headband materials give you comfort and durability Collapsible design gives you space-saving portability Detachable cable (includes 1.2m-3m coiled and 3m straight cables) Optimized for tracking, mixing, and DJ monitoring Includes carrying pouch and 1/4" screw-on adapter