Dyson Zone™ Absolute+ noise-cancelling headphonesPure Dyson audio Engineered for realistic, detailed audio with advanced noise cancellatio Advanced noise cancellation Monitors surrounding noise 384,000 times a second. To deliver an immersive listening experience. 50 hours audio only run time Up to 50 hours ANC audio only1, or up to 4 hours purification2 + ANC audio. Auto on off to save energy when not in use. Engineered for comfort Soft cushioned, micro suede lined ear cups seal in sound and seal