You can use this adapter to connect your own headphones to the in-flight entertainment system on the airplane for listening to music and movies.
This adapter is designed with a smaller rounded "base" to fit with All 2-prong airline jack (Some adapters doesn't and will not fit everywhere).
Some newer airplane types accept the standard headphone plug direct,with no need for the adapter. There is a rarely used 3-prong jack that doesn't fit the adapter.
Buying the airline adapter you are covered in the most cases.
1 x airline adapter
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