Product details:

Shut out the world and lose yourself in your music ?C or hear whats around you. Its your choice with the first in-ear noise canceling headphones from Bose. The Quiet Comfort 20 Acoustic Noise Canceling headphones are engineered to let you enjoy better sound every day, everywhere you go. Turn on noise canceling to reduce surrounding distractions and focus on your music. Or, at the touch of a button, activate Aware mode so you can hear whats happening around you without removing the headphones. Inside the Qc 20 headphones, exclusive Tri Port technology brings your music to life. Additional Bose technologies provide dramatic noise cancellation rivaling any full-sized headphone on the market today. Proprietary Stay Hear + tips create a soft, secure fit ?C with no need to force them into your ears. The inline microphone and remote let you switch to calls on your i Phone, and provide control for select i Pod, i Phone and i Pad models. The rechargeable lithium-ion battery provides up to 16 hours of use, and a USB charging cable is included. And even when the power is off or the battery runs out, you can still use these headphones to enjoy Bose quality sound.These noise-canceling earphones help provide crystal clear sound output along with minimized external sound disruption
StayHear+ tips help prevent these earphones from falling off from your ears
Take or refuse calls conveniently with the built-in microphone and remote of these earphones