Creative HN-605 Noise-Canceling Headphones (Discontinued by Manufacturer) Active Noise Cancelation - Reduce ambient noise by up to 80 and hear all of the detail in your music and movies Foldable Design - Slip them into your briefcase or bag Passive Mode - When you dont need it, turn the Noise-Cancelation feature off so you can save batteries Driver Type: 30 mm Neodymium magnets Long Battery Life - Use for up to 29 hours with a single AAA alkaline battery