Plug the headphones cord into the adapter and insert it into the airline jacks to enjoy powerful, balanced sound for music or movies during airplane travel. The airplane audio adapters converts a dual-prong airline jack to a standard headphone stereo mini plug (1/ 8 inch, 3.5 mm). Easy installation,Simply plug the headphones cord into the adapter and insert it into the airline jacks, just plug and use. Suitable for most airline dual socket headphone audio jack. Golden plated, Connectors offer great signal transfer. Suitable for most airline dual socket headphone audio jack.