PYLE PMEMS23 Cardioid Condenser Headset Microphone Wired Boom - Sensitivity: -45dB ( +/- 3dB) - Weight: 85g Element: Back Electret Condenser - Output Impedance: 2.2KO ( +/- 30%) - Dimension: 9.9mm Polar Pattern: Cardioid - Maximum SPL: 130dB - Connector: Shure 4-Pin Mini XLR Plug Wired Boom - Sensitivity: -45dB (3dB) - Weight: 85g^Element: Back Electret Condenser - Output Impedance: 2.2KO (30%) - Dimension: 9.9mm^Polar Pattern: Cardioid - Maximum SPL: 130dB - Connector: Shure 4-Pin Mini XLR Plug^Frequency Response: 50Hz-16kHz - Power Supply: External DC 1.5V-9V Power Supply Shure Wireless system - Color: Black^S/N Ratio: &gt;70dB - Cable: 4ft - Accessories: Windscreen