Top features: – Noise cancelling technology helps to block out background noise – Aware Mode helps to keep you safe – TriPort technology brings music to life – Stay in control with in-line remote – Advanced ear tips let you stay comfortable Noise cancellingLose yourself in the music or let the world in. Bose’s QC20 in-ear noise cancelling headphones let you enjoy great sound, wherever you are. Turn on noise cancelling to reduce outside distractions, including traffic and background noise. Or activate the Aware mode to stay in touch with what’s happening around you.Aware ModeEnjoy your music whilst staying aware of your surroundings. Whether you’re crossing a busy street or waiting for an announcement, simply press a button and Aware mode lets you tune into the sounds around you while still playing your music.TriPort technologyBose’s Triport technology, combined with ActiveEQ delivers depth and balance to bring your music to life. Enjoy lifelike digital sound like never before with subtle details, crisp highs and deep lows.Stay in controlGet control at your fingertips, with the QC20’s in-line remote control and microphone. Use the slider to switch on Aware mode, answer calls, change tracks or pump up the volume. The four-button remote also gives you access to voice-recognition apps like Siri or Google Search – perfect when you’re on the go.Advanced ear tipsThe QC20’s StayHear+ ear tips deliver a comfortable and secure fit, so you can listen to your music for hours. Combined with Acoustic Noise Cancelling technology they also physically block out noise, so you can focus on the music.Charge up in just two hours and enjoy better sound with the Bose QuietComfort 20 Noise Cancelling Headphones.