Mic: 4.0 x 1.3 mm The sensitivity is -42dB+/-3dB. Omani-directional directionality The driver Diameter: Ø50.0 mm Impedance: 22Ω+/-10% Regularity 20–2000 Hz is the range. S.P.L. (sensitivity): 108dB+/-3dB Headset jack: USB+3.5MM 3-pin, cable length: approximately 2m, audio adapter included