Pyle PLM31 Cardioid Condenser Headset Microphone, Flexible Wired Boom (3.5mm Connector Jack) for Phantom Powered Belt Pack Mic Systems Comfort Designed Wire Frame & Wired Boom For Secure Fit Phantom Power Supply Required: External DC 1.5V-9V (Bodypack Transmitter) Pairs well with the Pyle PLMC15 In-Line Power Battery Supply Compatible with Screw Lock Systems, Cardioid Polar Pattern Connector: Standard 1/8'' (3.5mm) Plug - Back Electret Condenser Frequency Response: 50Hz-16kHz - S/N Ratio: &gt;70dB Sensitivity: -45dB (3dB) - Output Impedance: 2.2KO (30%) Cable Length: 4ft, Windscreen Included. for any queries contact email support@pyleaudio.com Please Note: This is a condenser microphone that requires DC voltage phantom power typically from a microphone body-pack which is highly essential.