: Allows you to hear your surroundings (like airport announcements) at the touch of a button without removing the earbuds.
has been officially discontinued by Bose, finding brand-new, sealed units can be difficult. You will primarily find them through third-party retailers and resale platforms: buy bose quietcomfort 20
Bose Quietcomfort 20 Noise Cancelling Headphones Compatible With Apple eBay - voyage-store Go to product viewer dialog for this item. : Allows you to hear your surroundings (like
: Uses two microphones in each earbud to monitor and neutralize external sound, a feature highly regarded for flights and commuting. buy bose quietcomfort 20
New-condition listings can be found on eBay from international sellers for roughly .