The Telex Airman 850 is a lightweight general aviation headset complete with boom-mounted, noise canceling electret microphone. Lightweight design with soft, pliable cushions, adjustable headband, extended frequency drivers, and noise canceling electret microphone result in a comfortable headset providing the ultimate in clear, understandable communications. The Airman 850 headset with boom microphone is approved for aircraft use under FAA TSO’s C57a and C58a.