About this item Works with Windows (Not for use with Apple computer hardware) Sound card with 3.5 mm microphone-in and audio-out ports Sensitivity: -58 dBV/µBar, -38 dBV/Pa +/- 4 dB Frequency response:Headset: 20 Hz – 20,000 Hz Microphone: 100 Hz –16,000 Hz 6-foot shielded cord 3.5 mm color-coded connectors