• A microphone inside the headphone circuit monitors sound
waves and counteracts them by creating reversed phase
sounds of background noise.
• Reduces outside noise by 92% (-22dB) at 200Hz.
• Turn noise cancelling on or off as headphones can be used both ways.
• Enjoy the compact pen-type design and clip it to your clothing for
• Slide volume control is at your fingetrips.
• 40 hours operation time with 1 X AAA alkaline battery.
• Three sizes of ear pads and an Airplane plug included.