The Sennheiser PXC 550 Wireless turns every journey into a first-class experience. A truly smart travel companion, it offers Sennheiser's 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. The world can be a noisy place. With the PXC 550 Wireless you can just shut the door on it. Featuring Sennheiser's NoiseGard™ Hybrid adaptive noise cancelling it creates your own aural space in even the most chaotic of environments: The louder the noise around you, the stronger it is cancelled, giving you the most comfortable listening experience. The PXC 550 Wireless offers unrivaled speech clarity for personal and business calls. Identifying and filtering out all ambient noise it makes sure you will be perfectly understood at the other end of the line, no matter how busy your environment. Adjustable headband. Carry case. Bass control.