The Rail ANC is Skullcandy's latest premium earbud. never been used

Latest Sound Tech - The Rail ANC is Skullcandy's latest premium earbuds featuring best driver yet with deep bass and a dynamic range. Plus, Personal Sound lets you tune the sound to your unique hearing through the Skull-iQ App. Mega Noise Cancelling - The Rail ANC listens to the outside noise to actively mute the world around you. You can also adjust the noise cancellation level between mute, hearing and between.