AKG K- 67 Tiësto - Studio/Stage/DJ-headphone - developed with Tiësto (DJ and music producer), closed back, dynamic, on-ear, 3D-folding mechanism, glass-fiber reinforced polymer parts for maximum durability, 40 mm driver, 32 ohms rated impedance, 115 dB efficiency, frequency response: 16 - 24000 Hz, 500 mW maximum input, 3.5/6.3mm stereo adapter, cable length: ca. 1,3 m Weight: 200g (without cable)