These are the comfortable Bose headphones that reduce ambient noise so wearers can enjoy crisp acoustics without the distracting sounds of an office, home, or an airplane. Microphones inside and outside the earcup sense disruptive low-frequency noise, and internal circuitry generates a countering sound pattern that cancels those sounds, 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. An included cable with an inline remote and microphone for use with an iPhone 5, 4s, or 3GS allows users to answer and end phone calls and adjust volume with one touch. Earcups pivot so the headphones can slip into a protective carrying case for easy storage and portability. Includes one AAA battery and airline adapter. 7 1/2" H x 6" W x 3" D. (7 oz.)