Bose QuietComfort Headphones BRAND NEW AUTHENTIC SEALED Carry Case 3.5 mm to 2.5 mm audio cable USB-C® (A to C) cable (12") Legendary noise cancellation Seal yourself in with high-fidelity audio, eliminate distractions, and dive deep into your music. Modes for any musical moment Shut out the world with Quiet Mode, enjoy full transparency with Aware Mode, or blend the two with a Custom Mode in the Bose app. Up to 24 hours of battery life Enjoy marathon playlists and listening sessions with up to 24 hours of battery life.¹ Luxurious comfort Plush cushions softly hug your ears, while a comfortable yet secure band works to keep the headphones in place when you’re on the go. Customize your sound Adjustable EQ allows you to crank the bass, tweak the treble, and balance the mid-range to get the sound that best suits you. Optional audio cable An optional audio cable with an in-line microphone lets you plug into bold sound, even without a Bluetooth® connection. Enjoy private listening Pair your headphones with a Bose smart soundbar using SimpleSync technology to binge your favorite shows without disturbing others.