uxcell 20 Pieces -50dB 2.2K Ohm Uni-Directional Electret Condenser Microphone Product Name : Uni-Directional Electret Condenser Microphone;Sound Channel Number : Stereo Output Impedence : 2.2K Ohm;Sensitivity : -50dB Body Size : 6 x 5mm / 0.24" x 0.2" (D*T);Pin Pitch : 2mm / 0.08" External Material : Metal;Main Color : Silver Tone, Black Weight : 7g;Package Content : 20 x Uni-Directional Electret Condenser Microphone