Wearing the microphone PG185 Technical Specifications Type Condenser,electretbias Frequency Response 60Hzto12,000Hz*(seeFrequencyChart) Polar Pattern Cardioid(unidirectional) Output Impedance 1200Ω @1kHz* Output Level -47dBV/Pa(4.5mV)* u Attachthelavaliermic Signal to Noise Ratio 66dB,1kHzat1Pa* about15-25cm(6-10in.) Maximum SPL 120dB awayfromthemouth. Dynamic Range 92dB* (max.SPLtoA-weightednoiselevel) Output Noise 28dB(typical,A-Weighted)* Recommended Operating Voltage +5VDC,10Vmax(pin2topin1)