Spring Promotion! Buy an A20 & get a free Bose SoundTouch 10 wireless speaker, a $249 value!* Offer Valid from April 2 2017 to May 6 2017.FREE Expedited Post SHIPPING!* Plus buy 2 or more and SAVE at check-out. *Free Shipping for Canada! and USA!(some restrictions) (2+ Discount added after subtotal in shopping cart) *Mail in redemption. Bose A20 Aviation Headset Electret microphone Select Model when adding to cart. (fixed wing, helicopter, Bluetooth or non Bluetooth) Bose A20 Aviation Headset With OR WITHOUT Bluetooth Battery Powered, Electret microphone Significantly greater noise reduction for pilots than currently available. Improved level of comfort achieved through choice of materials, distribution of weight throughout the headset, 1/3 less clamping force than most conventional noise reducing aviation headsets, and additional room for the ears. Clear audio for enhanced communications. (Now available from Bose for the first time: Bluetooth communications interface. VERSIONS AVAILABLE with or without Bluetooth, select your model when adding to shopping basket. Also included by Bose for the first time: auxiliary audio input. Priority switching so pilots can decide which audio source they want to hear. At least 40 hours of typical headset use from just two AA alkaline batteries. Made in the U.S.A. Meets or exceeds all TSO standards. All this, and these headsets still weigh only 12 ounces. 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 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. It's made in the U.S.A., and meets or exceeds all TSO requirements. No other headset can deliver this advanced combination of benefits.