Neumann NDH 20, Studio Headphones, Frequency range: 5 Hz - 30 kHz, Dynamic 38 mm drivers with neodymium magnets, Impedance: 150 Ohm, Nominal load capacity: 200 mW, Sensitivity (1 kHz, 1 Vrms): 114 dB, Total harmonic distortion (1 kHz, 100 dB SPL): < 0.10%, Memory foam ear pads, Adjustable headband made of flexible steel, Earcup covers made of lightweight aluminium, Foldable headphones, 3.5 mm stereo mini jack, Weight (without cable): 388 g, Includes 6.3 mm stereo jack adapter, straight cable and spiral cable, fabric bag and short instruction manual