The ideal travel companion: The foldable PXC 300 headphones with NoiseGard ? Advance active noise cancelling technology let you enjoy music even in noisy environments. They reduce unwanted noise by up to 80%and the optimised circuit technology ensures reduced susceptibility to mobile phone interference. The PXC 300 is supplied complete with a protective soft case batteries and aircraft audio adaptors. Closed supra-aural stereo mini headphones with switchable NoiseGard ? Advance active noise cancelling technology Advanced Circuit Technology (ACT): reduced susceptibility to mobile phone interference due to optimized circuit technology Ideal for air travel and noisy environments Great for travel:patented folding mechanism and protective soft case for storage and transportation Ultra-lightweight design with ergonomic headband two-point suspension and soft high-quality ring ear pads for improved passive attenuation and superb wearing comfort Transparent and lifelike audio reproduction due to Duofol diaphragms with spiral embossing Excellent sound quality with deep powerful bass performance Supplied with two adaptors for in-flight entertainment systems (adaptors: 1/4 (6.3 mm) stereo jack and 3.5 mm double mono jack) Includes protective soft case Batteries included 2-year warranty