Airplane headphone socket travel adapter, Designed for Travelers. Plug in ANY pair of stereo headphones with 3.5mm jack into your airline dual-prong jack and enjoy the in-flight entertainment through your personal stereo headphones. 

Specifications:

1) Twin 3.5mm mono jack plugs to 3.5mm stereo jack socket. 

2) Convert a standard dual airplane socket into a 3.5mm stereo socket.

3) Compatible to Most Airline Dual Audio Jack