External Microphone Mic For Car DVD Radio Stereo Player Head UnitsDescription:Application: Bench / laptop / Counter Intercom/ car GPS / Car DVD， etc.Microphone can be glued to the wall / glass / car / door and so on.Frame can be used to clip the collar， lapel edge， the shirt， available with stage performances，Podium presentations， lectures， and also applies to the meeting， web chat!Specifications:Frequency response: 50Hz-20KHzImpedance: 2.2K OhmMic Head Size: 4.2X2.5X1.7cm (Length * Wide * high)Sensitivity (high sensitivity):-20dB ± 2dB (0dB = 1uPa)Direction: OmnidirectionalPlug: 3.5mmDiameter: 2.50MM or 3MM < core: 0.08 * 15 of the inner core and outer shield is 0.08 * 30>Cable length: Approx1.06MPackage Included:1 X Microphone Mic