B-Stock, Austrian Hi-X15 Bundle Version; Closed-back studio headphones; circumaural design; All metal hinges and bow for maximum durability; foldable construction for easy transport; memory foam ear cushions for maximum comfort; frequency range: 12 Hz - 24 kHz; sensitivity: 113 dB SPL/V; impedance: 25 ohms; input power: 150 mW; detachable cable: 1.4m; connector plug: 3.5 mm including adapter to 6.3 mm; dimensions: 205 x 170 x 80 mm; weight (without cable): 255 g, B-Stock with full warranty, may have slight traces of use