The Philips SHN9500 Active Noise Canceling Headphones blackout irritating background noise and allows you to enjoy your music in peace. These premium range headphones actively cancel background noise by as much as 85% and are Ideal for travel use in airplanes and trains. Mute button allows conversations without removing headphones and the soft ear cushions proved a perfect seal for perfect sound. Premium quality sound is delivered from neodymium drivers. The headband is easily adjusted for optimum fit and comfort Single sided detachable cable adds convenience. A carrying case is provided to protect your headphones when not in use. An adaptor is also provided for in-flight entertainment system connection and the 3.5 - 6.35 adaptor connects to all types of audio devices. Battery is included so you can use your product immediately.