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 whatƒ??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 Feature-Packed Headphones: Comes with an active noise cancelling slider, monitoring mode button, inline controls for volume, audio track and calls, also features an airplane audio adapter for convenience when flying Sleek, Durable Aluminum Build: Metal alloy black matte finish provides wired earbuds extra durability in addition to an elegant, stealthy look