Active Noise Cancelling Functionality: Reduces environmental noise and distractions by up to 25dB for an immersive auditory experience that lasts up to 15 hours per charge Increase Awareness with Monitoring Mode: Clearly hear airline or subway announcements and what's around you with the press of in-ear monitor button when ANC is on Built-In MEMS Noise Cancelling Microphone: Enables for crispy phone calls and undisturbed voice transmission while featuring a reduced footprint