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High Quality Noise Cancelling Headphones provide for ambient noise reduction and the reproduction of vocal and instrumental sound with vivid clarity. Up to 30 hours continuous use with a single AAA battery. In-flight Audio Plug. Built in monitor function. Slim, folding design for easy portability. | · | Noise cancelling headphones reduce ambient noise and provide a quieter environment to enhance audio entertainment | | · | ON/OFF switch with LED Power Indicator to activate noise cancelling circuit | | · | Up to 30 hours of continuous use with a single AAA battery | | · | Supplied plug adaptor for connection to stereo or dual jack in flight services | | · | Built in monitor function to hear surrounding sound without taking headphones off | | · | 40mm driver unit inner ear type headphones capable of reproducing vocal and instrumental sound with vivid clarity | | · | High quality clearer and powerful bass sound reproduction with neodymium magnet | | · | Frequency Response: 14 - 22,000Hz | | · | Swivel folding style | |