Shure SRH440A-EFS – Professional studio headphones, natural, transparent sound, circumaural, very light and comfortable headband for long-lasting wearing comfort, elegant and robust design, low distortion, dynamic 40 mm neodymium drivers, nominal impedance: 40 Ohms, nominal power handling: 500 mW, frequency range: 10 – 22000 Hz, sensitivity: 97 dB/mW, straight, detachable 3 m cable, single-sided cable connection, replaceable ear pads, incl. gold-plated 6.3 mm jack adapter, weight: 255 g