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Pro Best in class noise-cancelling
In addition to having overall impressive noise-cancelling (-33dB across all frequencies on some tests), these headphones excel when you need to cancel out jet engines (-45dB!). As such these headphones are ideal for flights.
The headphones stay comfortably in your ear. They don't always offer a complete seal, but surprisingly it doesn't affects the effectiveness of the noise cancellation or reduce comfort. Also included are 3 sizes of eartips to help better fit your ear. Note that these eartips are of a unique design so you won't be able to use aftermarket tips.
Pro Disable noise-cancelling with "Aware Mode"
A feature called "Aware Mode" that's quickly accessed from the remote will disable active noise-cancelling and open up the microphones to allow you to hear your surroundings better.
And LEDs on the control module will let you know when the "Aware Mode" is turned on.
Pro 16-hour battery
These headphones have a lithium-ion battery that promises to work for 500 charge cycles without diminished returns. After that it will still work, but won't last as long.
Note that the battery is non-replaceable so when it finally does stop working, you will need to buy a new pair of headphones.
Pro Comes bundled with a small pouch
Pro Cord doesn't tangle easily
These headphones have a 2.5 ft cord that's split chest high with a control module near the jack. It does a good job of not getting too tangled.
The suggested retail price for these headphones is $300. And although you can get a pair on Amazon for around $230 it still is a lot to pay for a pair of earbuds.
Con Average sound
The sound of the earphones is decent. Something you would expect from a pair of $120 - $150 in-ear headphones. The highs are a bit withdrawn, but mostly unnoticeable.