The ATH-ANC900BT QuietPoint wireless over-ear headphones feature digital hybrid noise-cancelling technology for the highest degree of ambient noise reduction of any QuietPoint model. This allows you to listen to music, watch videos, and take phone calls in extremely noisy locations without losing any of the detail in the sound you actually want to hear. Yet the headphones also have a switchable hear-through function that allows you to hear voices when you desire, so you can engage in conversations and hear important announcements without removing your headphones.