sennheiser pxc 250 ii collapsible noise-canceling headphones
highly portable the sennheiser pxc 250 ii noise cancelling headphones allow you to take off and then lose yourself completely when flying . thanks to high-performing neodymium magnets the pxc 250-ii delivers a powerful detailed sound with a wide frequency response plus it s equipped with noisegard to screen out intrusive ambient noise . click here for a larger image . noisegard technology cancels up to 80 percent of droning fatiguing airplane or bus cabin noise without added bulk or size . they are also equipped with a convenient in-line volume control which enables you to adjust playback volume even when the music player is stowed . they offer a closed supra-aural design that provides for excellent passive attenuation of ambient noise . the newly-improved battery pack requires only a single aaa alkaline battery and it lasts up to 50 hours -- more than enough for a flight from tokyo to new york even taking delays into account . suitable for all types of modern music it provides detailed sound reproduction with a slight emphasis on the bass . other features include a steel-reinforced headband for high durability and included carrying case . what s in the box pxc 250-ii headphones aaa battery in-flight audio adapter dual 1 8 inch 3.5 mm mono plug carrying pouch specifications noise cancelling up to 80 percent frequency response 10-21 000 hz sound pressure level spl 112 db ear coupling on-the-ear impedance 300 160 ohms active passive total harmonic distortion thd lt 0.1 percent connector 1 8-inch 3.5 mm cable length 4.9 feet power single aaa battery operating time up to 50 hours compatibility optimized 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 . warranty the sennheiser pxc 250 ii is covered by a 2-year warranty with the backing of sennheiser s worldwide service network .