Answer:
Google it, I can't send links, but the brainly faq link should show up
You press and hold the "b" button on your left earmuff, but you have to hold it down as long as you want ANC (Automatic Noise Cancelling) to be turned off, in other words, as soon as you release the button, ANC will be turned back on. Unfortunately, this will also mute your music.
A) Marian Shelby. “The Fall of Rome.” Military Forces. n.p., 11 Mar 2009. Web.
14 Oct 2012.
