A genuine Vietnam War era Astrocom H-157/AIC Headset & Microphone as used by U.S. Air Force and U.S. Navy pilots & aircrew. This headset was released in the early 1960’s and was the successor to the H-78. Was issued with the M-87/AIC microphone, this headset allowed the microphone and attachment to be worn on either the left of right side, retains the original connection cable and plug.