Creative Aurvana X-Fi Noise-Canceling Headphones (Discontinued by Manufacturer) X-Fi Crystalizer intelligently analyzes sound and restores the highs and lows lost during MP3 or other file compression Aurvana X-Fi headphones contain top grade materials and components that reduce the ambient noise around you by up to 20dB Easily accessible controls for X-Fi Crystalizer, X-Fi CMSS-3D, Active Noise Cancellation and volume 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 iPhone cable included