Green for go! An impressive active noise cancellation reduction of up to 22 decibels on outside noise whilst your music is enhanced for rich bass and a well-balanced sound. Built-in mic and play/pause controls located on the ear cup allowing for enhanced usability, reliability and convenience, compatible with all mobile devices. Listen for up to 12 hours on a single charge. With a quick 2 hours charging time, simply use the USB charging cable to connect to any powered USB port. Fold up and stash in your handy travel bag and you’re ready to go.