http://us.creative.com/products/prod...5&nav=featuresThe Creative Aurvana X-Fi is an acoustic revolution...the world's first noise-canceling headphones with X-Fi technology. Noise cancellation lets you enjoy your music without distractions. X-Fi will make your music more thrilling. In short, Aurvana X-Fi will fundamentally change the way you listen to your music and movies.
Intelligent Noise Cancellation
The acoustic grilles allow for optimum sound pick-up from the concealed microphone and advanced noise cancellation circuitry, delivering a true and faithful sound to your ears from the premium 40mm Neodymium drivers.