Audio-Technica (ATH-ANC7B) QuietPoint Active Noise-Cancelling Closed-Back Headphones (Certified Refurbished) QuietPoint noise-cancelling headphones feature noise-cancelling circuitry that effectively reduces environmental noise by 90% Closed-back headphones feature large-aperture 40 mm drivers with neodymium magnet systems for impactful bass, extended treble and higher fidelity Lightweight, compact, fold-flat design is ideal for travel; fully integrated electronics: no external modules needed Full-size 1/4-inch adapter and specialized airline adapter for connecting to in-flight entertainment systems, and a handy carrying case Redesigned, comfortable earcups with generously cushioned padding and a shape that fits easily over any ear