■ Change the earplug
The headset may be provided with different sized earplugs. Select the
earplug that fits the best and is the most comfortable for your ear. When
you insert the earpiece into your ear, do not push the earplug deep into
the outer auditory canal because in that case the volume may sound too
loud.
To change the earplug, pull the current earplug from the earpiece (1), and
push the new earplug over the earpiece in the same position (2).