Syba Connectland CL-CM-3004 Stereo Headset with Microphone (Discontinued by Manufacturer) This headset with its fashion design has been created to be used with multimedia, gaming, Its comfortable headset allows long duration of use Mic Type: 9x7mm Impedance: Maximum 2.2k Sensitivity: -58dB at  2dB (0dB=1v/pa)