New BOSE brand replacement QuietComfort airline headphone adapter / audio jack plug. This is not an OEM generic product - you can trust the BOSE brand. This replacement adapter lets you connect your BOSE QuietComfort or other headphones to in-flight entertainment systems equipped with dual or single output 3.5 mm jacks. Simply plug the headphones cord into the adapter and insert it into the airline jacks. Then enjoy powerful, balanced sound for music or movies during any airplane travel.