Bose QuietComfort 35 QC35 Series II Noise Cancelling Headphones Silver - Auxiliary Cable Charging Cable Airplane Adapter - This adapter lets you connect your QuietComfort 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 jack. Then enjoy powerful, balanced sound for music or movies. Questions? Leave a comment below!