Other Features :
Plug Type: 2 x Stereo Mini Jack 3.5mm. Adjustable Headphone Track and Omni Directional Microphone. Membrane: 40mm Diameter (Headphone)/6x5mm Diameter (Microphone). Impedance: 320hm (Headphone) 1kohm (Microphone). Frequency Response: 20Hz-20,000Hz (Headphone)/30Hz to 16,000Hz (Microphone). Sensitivity: 105db S.P.L At 1 KHz (Headphone)/-58db+2db (Microphone)