EAH-AZ100
The size of the earpieces affects the audio quality (music playback, calls) and comfort. Select a size that is comfortable and fits well in both ears.
Note:
•
Even with earpieces of the same size, the dimensions may vary depending on the model.
Removing the earpiece
1.
Turn the earpiece 
inside out to reveal the earphone insertion part 
.
inside out to reveal the earphone insertion part .2.
Grasp the earpiece and gently pull it out at an angle while twisting slightly.
and gently pull it out at an angle while twisting slightly.Attaching the earpiece
1.
Turn the earpiece inside out to reveal the earphone insertion part .
inside out to reveal the earphone insertion part .2.
Align the two protrusions 
on the earpiece’s insertion part with the two indentations 
on the earphone and insert them.
on the earpiece’s insertion part with the two indentations on the earphone and insert them.•
Make sure to insert it fully, and check that the earpiece is not angled incorrectly.
3.
Return the earpiece to its original position.
to its original position.Note:
•
The size of the earpieces that fit your ears may differ between the left and right.
•
Select the earpieces that provide the best noise cancelling.