Shure SRH840A-EFS – Professional studio headphones, natural, transparent sound, circumaural, headband with ergonomic fit guarantees 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: 5 – 25000 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 and bag, weight: 260 g