Most popular light-weight aviation headset with passive noise reduction Comfort The Airman 750 features open-air style earphones that allow for long-term, fatigue-free usage. Adaptability The earphone housings are mounted on stainless steel sliders which permit over two inches of fitting adjustment and the ear cushions are removable for easy field replacement. In addition, the microphone boom is flexible for optimum microphone placement and is reversible for wearing on either side of the head. Sound Quality The Airman 750 features a miniature, amplified, noise-cancelling electret microphone that provides superior 400Hz hum rejection. *Available only on the Airman 750 model FAA TSO Approval The Airman 750 is approved for aircraft use under FAA TSO C57a and C58a; the Airman 760 is approved under TSO C57a. The Airman 750 headset is the best-selling lightweight headset in the world. Weighing in at only 3.2 ounces, this headset is standard equipment on more than 70 percent of commercial airframes. The Airman 750 features an amplified noise canceling electret mic for crystal clear voice transmission. A flexible boom allows microphone adjustment to preferred side, and the adjustable stainless steel headband make the Telex Airman 750 comfortable even on the longest flights. The standard Airman 750 is a two-ear headset. Both are FAA TSO C57a & C58a approved.