This is a noise-canceling headphone that can reduce environmental noises in airplanes, trains, buses, and air-conditioners, providing a quieter listening environment.
The Panasonic RP-HC720 is a pair of stereo headphones featuring an active noise canceling function designed to reduce environmental noises, such as those found in airplanes or trains, by up to 95%. The unit operates using AAA batteries and includes a detachable cord with an air plug adaptor for use on aircraft.
The unit requires one RO3 or AAA size battery to operate the noise canceling function.