The most technologically advanced Bose® headset ever. Bose was the first to introduce active noise reducing headsets to aviation more than 20 years ago, forever changing the way pilots fly. Now, the Bose® A20® Aviation Headset introduces an entirely new standard. It’s been completely re-engineered for significantly increased noise reduction in even louder environments. With an improved degree of comfort you’ll appreciate. All without compromising the clear audio you expect from Bose. Plus, a Bluetooth® communications interface, auxiliary audio input and priority switching. It’s made in the U.S.A., and meets or exceeds all TSO requirements.