If you are looking for a peaceful place to work in the office, you need not to go anywhere else. This Audio Technica ATH-ANC7B Active Noise-Cancelling Closed-Back Headphones can actually help you find peace and quiet in your noisy office. The headphones have an active noise-cancelling feature which can reduces environmental noise by 90% effectively. The lightweight closed-back headphones have a comfortable cushioned padding. A full-size 1/4-inch adapter and specialized airline adapter are also included to give a you a peaceful in-flight moment. 2 AAA batteries are required to power the Audio Technica ATH-ANC7B Headphones.