Item Description CS-Y0003 External Microphone Mic For Car DVD Radio Stereo Player HeadUnits Microphone can be glued to the wall / glass / car / door and so on. Frame can be used to clip the collar， lapel for edge， the shirt， available with stage performances， podium presentations， lectures， and also applies to the meeting， web chat! 1 X Car Microphone Mic Description Application: Bench / laptop / Counter Intercom/ car GPS / Car DVD， etc. Frequency response: 50Hz-20KHz Impedance: 2.2K Ohm Mic Head Size: 4.2X2.5X1.7cm (Length * Wide * high) Sensitivity (high sensitivity):-20dB ± 2dB (0dB = 1uPa) Direction: Omnidirectional Plug: 3.5mm Diameter: 2.50MM or 3MM < core: 0.08 * 15 of the inner core and outer shield is 0.08 * 30> Cable length: Approx1.06M