EAH-AZ80/EAH-AZ60M2/EAH-AZ40M2

The illustrations use EAH-AZ60M2 as an example.
1.
Remove the earpiece.
Hold the earpiece and pull out while twisting slightly.
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2.
Attach the earpiece.
Make sure that the earpiece is firmly attached and not slanted.
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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.