The black QuietComfort 20 Acoustic Noise‎-Cancelling In‎-Ear Headphones from Bose feature their active noise‎-cancelling technology with an in‎-ear headphone design‎.‎ The headphones are powered by Bose's TriPort Acoustic drivers to produce a balanced frequency response‎.‎ They are powered by the built‎-in rechargeable lithium‎-ion battery that provides up to 16 hours of noise cancellation per charge‎.‎ The in‎-line microphone and remote allows you to take calls and control your iPhone‎,‎ iPad‎,‎ or iPod device‎.‎

Aware Mode

There are moments when you may not want to be so cut off from your surroundings‎.‎ Crossing a city street‎.‎ Waiting for airline gate announcements‎.‎ This is where Aware mode comes in‎.‎ Instead of removing your headphones‎,‎ just press a button‎,‎ and you're back in touch with the sounds around you ‎- while your music keeps playing‎,‎ and you still experience some noise cancellation

Rechargeable Battery

The environmentally friendly built‎-in lithium‎-ion battery ‎(‎located inside the module‎)‎ charges in just 2 hours with the included USB cable‎,‎ and delivers up to 16 hours playing time per charge‎.‎ A battery indicator light displays power status‎.‎ And‎,‎ even if the battery dies‎,‎ your music still plays with performance equal to that of our regular in‎-ear headphones