These fold-flat active noise-cancelling headphones deliver 20 dB reduction in background noise. Equipped with 40 mm drivers with neodymium magnet systems, power/low battery indicator, adjustable headband, swiveling earcups, detachable cable with 1/8 (3.5 mm) mini-plugs. A (6.3 mm) adapter, airline adapter and durable carrying case are included.