Type: Over the EarPart: TM602Frequency Response: 100Hz-18KHzTHD: < 0.3%Input Impedance: 32 ohmsSensitivity: 88 dB SPL/1 mWCord Length: 4 feetFeatures: Dynamic element for full Sound of Koss Adjustable headband for best fit Foam ear cushions for open hear-through sound Straight Dual Entry Cord