40mm neodymium acoustic drivers for highly detailed sound and strong bass Hi-Res Audio certified so you can hear every detail as intended Touch control. Swipe, tap, and press for easy control Google Assistant compatible Built-in mic with echo cancellation for clear hands-free calls Flat-folding and compact-folding design for easy storage- in two configurations The headband is light, easily adjustable, and smooth Stay tuned to the noise of the street in Awareness Mode