Andrea NC-181 Speaker Plug 3.5mm Microphone Plug 3.5mm Connector Supra-aural High Fidelity Monaural PC Headset with Noise Canceling Microphone Cord Length: 8 ft. Part: C1-1022100-1 Headphone Frequency Response: 50Hz-20KHz Headphone Input Impedance: 32 ohm Headphone Sensitivity: 114dB S.P.L. at 1KHz Weight: 0.2 Microphone Frequency Response: 100Hz-10KHz Microphone Signal to Noise Ratio(SNR): >60 dB