Driver: Dynamic, 40mm with neodymium magnets. Type: Circumaural, Closed back. Frequency Response: 20Hz-20kHz. Impedance: 16 ohm. Sound Pressure Level: 99 dBSPL/mW at 1kHz. T.H.D: </ 2%. Cable Length: 1.3m. Connection: 3.5mm plug (4 pole). 1 year warranty Microphone: Element: Electret condenser microphone. Polar pattern: Noise-canceling. Frequency Response: 50Hz-18kHz. Sensitivity: -41.5dBV (0V/Pa at 1kHz).