AKG K-712 Pro Reference-Studio-Headphones - dynamic, open-back and over-ear design, 62 ohms impedance, sensitivity: 105 dB, frequency range: 10 - 39.800 Hz, 200 mW maximum input power, detachable cable, 3 m cable with gold-plated 3,5 mm plug, incl. 6,3 mm adapter and coiled cable, weight: 235 g (not including cable)