Closed type high definition dj headphones high definition bass and super transparent highs ultra high dynamic range high efficiency cobalt capsule single sided coiled cord with oxygen free copper wires round swivelling ear cups ultra rugged headband construction technical data capsule diameter 40 mm frequency response 20 hz 20 khz max power handling 100 mw impedance 32 ohm sensitivity 113 5 db 1 khz cord length 1 m extendable to 2 5 m connector trs stereo connector plus trs