The airline adapter converts a regular headphone stereo 1/8' (3.5mm) to a dual 1/8inch(3.5mm) airline Allow using your own 3.5mm audio headphone to enjoy the onbroad radio, ...etc Fits all standard airline connectors and headphone stereo jacks Easy to use, just connect this adapter with your headphone and the audio in your Colour:black Material:plastic Package Contents: 4 x Airplane headphone adapter Only the above package content, other are not included. Note: Light reflection and different displays may cause the color of the item in the a little different from the real . The measurement allowed error is +/- 1-3cm.