KOSS CS95 Single Ear Communication Mono Headset

KOSS CS95 3.5mm Connector Single Ear Communication Mono Headset Cord Length: Straight, Single Entry, 8ft Headphone Frequency Response: 30Hz-16KHz Headphone THD: Headphone Input Impedance: 32 ohm Headphone Sensitivity: 91dB S.P.L. at 1KHz Weight: 2.5 oz. Microphone Impedance: ~2K ohm Microphone Sensitivity: -56dB +/- 3dB per 1V/1KHz); (-36dB +/- 3dB, V/Pa)