Really Bose standard active noise canceling ANR function

Customers comment this is a small Bose A20 light in weight and comfortable

Super comfortable for long time wear, let you enjoy flying all the time
Use 2 x AA batteries, two new batteries can work more than 48 hours

The mic boom can be rotated by 360 degree so the microphone can be used for left or right side

Premium noise cancelling electret microphone ensures crystal clear communication every time

dual volume controls on the control box

MP3/Radio/iPod/iPad Compatible with link cable included

Always enjoy Hi-Fi sound quality for the music

Link cable for Cellphone or mp3 included.
With Mono/Stereo Switch 
Professional ANR aviation headset on the plane while Great ANC headsets for home use or travelling use. 
A good quality headset case included for every headset.