Sony's MDR-V600 Studio Monitor Series Stereo Headphones are designed and engineered for High End Audio Applications. Features include a Circum-Aural Earcup Design, a Large Aura-Nomic Design 40mm Driver Unit, a Convenient Folding Design, Reversible Earcups for Single-Side Monitoring, a Cushioned Headband, and a Concealed Single-Sided Oxygen-Free Copper Coiled Cord. Put your MDR-V600 in its carrying case and keep on moving!