Denon Professional DJ Headphones w/Swivel ear cups for ease of one-ear monitoring Dynamic, Closed Back Design - When monitoring high levels of sound, the DJ can count on the DN-HP700 to deliver an outstanding 1,700 mWatts of thumping power to each insulated and hermetically sealed ear cup. Large 40mm Drivers - The DN-HP700 features one of the largest speaker drivers in its class to preserve superb audio fidelity even at high volumes with heavy bass. Folding Design - The flexible joints allow you to fold the headphones to half their size for space saving travel and protection. Dual Size H/P Connector - The HP700 comes equipped with a nickel platted 1/4 adaptor (6.35mm) and is secured in place with its screw-on design. Once the adaptor is removed, the size becomes 1/8 (3.5mm) for use with portable media players. Semi-Coiled Soft Insulated Cord