This item was never delivered. I contacted merchant several times whom stated order delivered and signed for - never provided verification of delivery despite request.
I know they have ANC. Did what it was supposed to do but the ear cups fit over the ear they provide the noise suppression you need unless you are in a loud environment. All-in-all I'm extremely impressed and happy with them. I look forward to getting back to them. One more thing to say. The left and right indicators are very clearly marked. One feature that made me happy is that when fully charged, the indicator light goes from red - charging to - blue fully charged. This may not matter to others but this little feature means the world to me. Before this review tuns into a novel. Buy them! You won't be disappointed,