The sennheiser pxc 550 wireless turns every journey into a first class experience a truly smart travel companion it offers sennheisers renowned high quality sound and noisegard hybrid adaptive noise cancellation in a sleek foldable design an intuitive ear cup mounted touch control panel and voice prompt system allow for a convenient selection of settings with up to 30 hours of battery life the pxc 550 wireless lets you travel around the world in comfort on a single charge brilliant blue