Sony Premium Noise-Canceling Lightweight Extra Bass Stereo Headphones The Noise Cancelling Headphones from Sony are active noise canceling headphones that are built for compact transport and comfort. Made for use on the subway, train, plane or at the office, the Ergonomically Shaped Headphones are designed to reduce ambient noise by up to 99% when the noise canceling circuitry is activated. The Headphones boast 30mm drivers with neodymium magnets designed to allow for powerful bass and clear high frequency response. The lightweight, on-ear design aims to allow for comfortable listening over long periods of time. The ergonomically shaped, flexible earpads also contribute to a build designed for extended use during leisure and travel. 30mm Dynamic Dome Drivers The 30mm driver units coupled with ferrite magnets are designed to accurately reproduce a broad, dynamic frequency range, resulting in smooth transitions in treble and mid-range frequencies with ample bass response Active Noise-Canceling Flip the switch and take advantage of proven Noise Canceling technology, based on the intelligent analysis of environmental ambient noise, and enjoy outstanding noise-free (up to 95%) audio performance Powerful Bass Specially designed, powerful drivers deliver deep and powerful bass that perfectly complements today's popular music genres Pressure-Relieving Earpads The adjustable headband with swivel ear pads is designed for comfort so you can enjoy extended listening sessions without fatigue Swivel Earcups The swivel and folding-style earcups stow away for compact portability Up to 80 Hours of Battery Life One AAA alkaline battery provides up to 80 hours of continuous, noise-free music playback