Type: Headphone Driver Unit: 30mm neodymium driver Frequency Response: 12Hz-24KHz Input Impedance: 32 ohms Sensitivity: 103 dB/mW Cord Length: 3.9 ft. / 1.2 m Weight: 2.33 oz. / 66 g Features: 500mW max. input power Soft ear-pads for ideal sound isolation and comfortable fit Flat foldable design for compact carrying Stainless steel headband for excellent wearing comfort Gold-plated iPhone -compatible slim plug