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<h3>Lose yourself in your music</h3>
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<p>QC20 headphones let you experience music on the go as never before. You'll enjoy lifelike, digital sound quality that stands out from the noise around you&mdash;plus the freedom of an in-ear headphone. StayHear+ tips physically block some noise while our Acoustic Noise Cancelling technology electronically reduces most of what's left. It's just you and your music, even in noisy environments.</p>
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<h3>Tune in to your environment</h3>
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<p>But 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&mdash;while your music keeps playing, and you still experience some noise cancellation.</p>
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<h3>Engaging sound</h3>
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<p>All this, plus Bose lifelike sound. Sound you wouldn't expect from in-ear headphones. Our TriPort&reg; technology and Active EQ combine to give your music a depth and balance that keep your daily soundtrack fresh and alive. The subtle details shine through, too. So wherever you are, your music's front and center.</p>
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<h3>Advanced ear tip technology</h3>
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<p>And your music's even easier to enjoy when you're not fussing with your headphones. Proprietary StayHear+ tips create a soft, secure fit with no need to force them into your ears. The cone shape spreads contact evenly across the ear for maximum comfort, and forms a gentle seal that contributes to the headphones' full-spectrum noise reduction.</p>
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<h4>Dimensions</h4>
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<li>QC&reg;20 headphones &mdash; Apple devices (Including cable and StayHear&reg;+ tips):52" L (1.55 oz)</li>
<li>StayHear&reg;+ tips:1.25" H x 1" W x 0.5" D</li>
<li>USB cable:12" L</li>
<li>Clothing clip:1" H x 0.25" W x 0.5" D</li>
<li>Control module:3.5" H x 1.25" W x 0.375" D</li>
<li>Case:1" H x 5.5" W x 3.1" D</li>
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<h4>In the box</h4>
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<li>QuietComfort&reg; 20 headphones &mdash; Apple devices</li>
<li>3 pairs StayHear&reg;+ tips (S, M, L)</li>
<li>Clothing clip</li>
<li>Rechargeable lithium-ion battery (built-in)</li>
<li>USB charging cable</li>
<li>Carrying case</li>
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