Frequency Response: 20~22,000Hz Impedance: - Headphone: 300 Ohms±15%(at 1KHz) - Mic: 1.5k Ohms Sensitivity(S.P.L): - Headphone: 105dB±3dB(at 1KHz) - Mic: -58dB±2dB Rated Power: - Headphone: 200mW - Mic: 0.5mA Driver Diameter: 40mm Plug: Ø3.5mm or XLR Cord Length: 6~8ft