Professional Active Noise Cancelling Technology: Developed using advanced noise canceling technology, the Wireless Headphones effectively blocks out surrounding noises, such as airplane cabin noise, city traffic or a busy office, so you can enjoy listening to music or comfortably watch movies and TV shows .Perfect for using on an airplane, train in the gym or any noisy environment Maximum Comfort & Ergonomics Design: The professional Memory-protein earpad simulate human skin texture, 90 swiveling earcups ,adjustable headband and around-ear style ensure lasting comfort Incredible 30H Playtime for Travel : Up to 30 hours of wireless play time from a rechargeable lithium-ion battery in bluetooth mode and NC mode, enjoy music while walking, running, biking, climbing or doing other exercises for a long time. For your convenience, each pair of our headphones comes with their own travel-friendly storage/carrying case