Hello, and welcome to my auction.  Pictured for sale is a David Clark H10-40 headset in excellent condition. Unit features Oregon Aero Headband and Mic Muff upgrade as well as having been converted to ANR via kits available from Headsets, Incorporated.  They work excellent and are very quiet!  ANR runs on a single 9V battery.  Guaranteed to work as advertised or your money back.

Thanks for looking!