Hong Kong, March 16 -- ll Nippon Airways (ANA) will make Sony's noise-cancelling WH1000XM3 headphones available to first class passengers on international flights following their success with premium passengers on its A380 Flying HONU routes.

The headphones will be available to the airline's first class passengers travelling from Tokyo to Chicago, Frankfurt, Honolulu, Houston, London, Los Angeles, New York, San Francisco and Washington D.C.

The Sony headphones have a built-in"NC Optimizer" function that optimizes sound quality according to changes in atmospheric pressure, ANA said.

ANA executive vice president, Hideki Kunugi, said the airline was "proud our close relationship with Sony makes it possible for us to have the latest technolo...