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.