The M-80 Electret Microphone is a professional-grade microphone designed for use in aviation and other demanding environments. It is equipped with an electret condenser element that provides excellent sensitivity and clarity, making it ideal for use in voice communications. The M-80 also features a robust, noise-cancelling design that helps to reduce background noise and improve speech intelligibility. It is compatible with a variety of aviation headsets and intercom systems, and is suitable for use in a wide range of applications, including air traffic control, military communications, and general aviation.