Highly portable travel headphones - such are the PXC 250-II mini headphones with NoiseGard™ active noise cancellation technology. They also come with a closed, supraaural design which provides for excellent passive attenuation of ambient noise. Adding to this, the newly-improved battery pack requires only a single AAA alkaline battery; it lasts up to 50 hours, more than enough for your return flight from Tokyo to New York!\n\n- NoiseGard™ active noise cancellation technology - Ideal for use on a plane, train, bus or in any other noisy environment;\n- Closed design ensure excellent passive attenuation of ambient noise, allowing you to enjoy your music without distractions;\n- Suitable for all types of modern music: detailed sound reproduction with a slight emphasis on the bass;\n- Steel-reinforced headband for high durability;\n- Long lasting NoiseGard™ usage - a single alkaline battery lasts up to 50 hours!;\n- Integrated volume control for enhanced usability and convenience;\n- Fold and flip: registered design allows the ear cups to be turned 90° and the headphones folded towards the headband (headphones will lock in open and closed positions);\n- Convenient carrying case included;\n- Optimised for in-flight entertainment systems as well as MP3, iPod, iPhone (iPod and iPhone are trademarks of Apple Inc. registered in the U.S. and other countries) and portable media players.