Pioneer SE-NC31C-K Mode D'emploi page 7

Using the Earphone
1 Connection to AV devices
When connecting the earphones to an airline onboard audio
system, use the supplied plug adapter.
2 Using the earphones
Confirm the left/right orientation of the earphones by looking at
the "L" and "R" symbols or the earphone color, and place the
earphones in your ears. Select the provided earphone tip that
best fits your ear size.
L: left
gray
In flight plug adapter
R: right
red
7
En