These are the Bose Bluetooth headphones that reduce ambient noise so wearers can enjoy crisp acoustics without the distracting sounds of an office, home, or airplane. Microphones inside and outside the earcup sense disruptive low-frequency sound waves, and internal circuitry generates a countering audio pattern that cancels the noise, so even an airplane engine’s roar becomes little more than a hum. Proprietary Bose ear cushion technology forms an acoustic seal that reduces higher-frequency sounds, so wearers can enjoy the rich, tonally balanced audio for which Bose is famous. A button on the exterior of the earcups allow users to play, pause, and change songs, adjust the volume, and answer calls when connected to a smartphone. The earcups pivot 90° so the headphones can slip into their included protective carrying case for easy storage and portability. With a free app that provides software updates, product tips, and enables personalized settings. A two-hour charge via its included 12" USB cable provides 20 hours of wireless power. Includes Lithium ion battery, 4 7/2" audio cable, and airline adapter. 7" L x 6 3/4" W x 3 1/4" D. (8 1/2 oz.)