Folds for compact travel in included drawstring storage/travel pouch, 40mm drivers for rich bass and well-balanced sound, Premium earpads and fully adjustable head strap for long-haul comfort, Listen for up to 12 cord-free hours on a single 2 ½ hour charge, Features “HUSH" noise cancellation technology that reduces ambient noise and amplifies music, Connect via Bluetooth® 4.1 technology, Includes a USB/micro charging cable, a 3.5mm aux-in cable and 2-pin adapter for in-flight entertainment on airplanes, 18db - 22dB noise cancellation, Built-in mic/remote button,