Type: Behind the Neck Driver Unit: 30mm Frequency Response: 12Hz-24KHz Input Impedance: 24 ohms Sensitivity: 106 dB/mW Cord Length: 3.3 ft. Features: Retractable cord for preventing cord tangling and for easy carrying Pressure relieving urethane cushion for comfortable fitting Neodymium magnet for superior sound Folding mechanism for easy carrying Parts: 1 year limited