POA34-Ex Audio Details Technical Specifications Atex Bone Microphone Headset above PTT partIntelligently designed Atex bone microphone heaset with noise reduction capabilities ideal for when operating in noisy working environments.Find a dealerHighlightsFunctionsTechnical SpecificationsMicrophone sensitivity -45dB @1KHz, impedance 3900Ω @1KHz, speaker sensitivity 82dB ±2dB @1KHz, impedance 32Ω ±15% @1KHz, rated power 200mW, maximum power 500mWRelated Products PD792i-Ex