Pyle PMKWS3 Flexible Waterproof/Sweatproof Headset Microphone for Exercise and Fitness, Condensor, Omni-Directional, XLR 4-Pin Shure Connector Wired Boom - Shure: 4 Pin XLR Jack Connector Flexible and Water Resistant Construction Perfect for Active & Mobile Performances Element: Back Electret Condenser - Polar Pattern: Omni-Directional Frequency Response: 20Hz - 20kHz - S/N Ratio: &gt;70dB - Sensitivity: -42dB +/- 3dB Output Impedance: 2K +/- 30% - Max. Input SPL: 130dB - Power Supply: DC 1.5 - 9V