Professional closed and reversible DJ headphones. 50mm diameter capsule and neodymium Frequency Response: 20Hz-20kHz, Output Power: 2000mW, Impedance: 3Ohm, Sensitivity: 98dB Cable length: 3m Connector: Mini stereo jack with 1/4″ adapter. Single sided removable cable with 0.3175 cm jack and 0.635 cm gold plated adapter .