Frequency Response: 20Hz-25KHz Input Impedance: 32 ohms Sensitivity: 96 dB/mW at 1 kHz Cord Length: 9.8 feet Weight: 8.82 oz. Features: Open-air headphones produce no sense of pressure on the ears, resulting in a completely natural sensation Lightweight honeycomb aluminum casing 40 mm drivers with neodymium magnet systems for superior sound reproduction Self-adjusting 3D Wing Support Housing provides comfortable support for a more enjoyable listening experience Extremely comfortable velvet ear pads OFC (oxygen-free copper) cable