Precise closed ear structure for accurate and pure sound. High quality headband and soft leatherette ear pads for ultimate comfort. Secure screw fixed cable. Large 50mm Neodymium magnet components. Speaker diameter 40mm. Impedance 32 ohms. Frequency response 20Hz-18Khz. Sensitivity 90dB +/- 3dB Cord length 2.5m. 3.5mm plug and 6.3mm adapter included.