KRK KNS 8400, Studio Headphones, Closed, Circumaural, Dynamic, Impedance: 36 Ohm, Frequency range: 5 Hz - 23 kHz, Sensitivity: 97 dB (1W/1m), Nominal power rating: 500 mW, Latex memory foam ear pads, 2.6 m audio cable, 0.75 m extension cable with volume control, Connector: Mini jack including 6.3 mm stereo jack adaptor, Dimensions: 245 x 268 x 94 mm, Weight (including cable): 271 g, Weight (excluding cable): 235 g, Includes carry bag and cleaning cloth