https://www.marinair.co.nz/shop/Aviation++Pilot+Supplies/Headsets+Accessories/PILOT+PA-HNM+Microphone/x_sku/HE4737.html
Pilot PA-HNM Electret mic' for extreme high noise environments
Pilot PA-HNM electret noise canceling microphone fits most flexible boom equipped headsets, designed for use in extreme high noise aircraft
electret micpilothnmextremehigh
https://proaudio.ie/product/mipro-mu-76-electret-condenser-mic-capsule/
MIPRO MU-76 Electret Condenser Mic Capsule | Pro Audio
MIPRO MU-76 Electret Condenser Mic Capsule for wireless microphones, ideal for compatible MIPRO systems. Enquire today for details.
condenser micpro audiomiproelectretcapsule