The Airman 750 weighs under four ounces, but it's no lightweight
when it comes to performance. A miniature, amplified noise cancelling
electret mic provides superior 400 Hz hum rejection. Flexible
boom pivots to either side of the head. Stainless steel headband
has overhead cord, and dual dynamic receivers include replaceable
cushions that gently hug each ear. Order Push-to-Talk switch for
aircraft not so equipped. FAA TSO C57a & C58a.