B-Stock, AKG K-612 Pro High-Performance-Studio-Headphones - dynamic, open-back and over-ear design, 120 ohms impedance, sensitivity: 101 dB, frequency range: 12 - 39.500 Hz, 200mW maximum input power, 3 m cable with gold-plated 3,5 mm plug, weight: 238 g (not including cable), B-Stock with full warranty, may have slight traces of use