oticon IIc Instructions For Use Manual page 6

ImporTanT noTIce
Open the battery door fully to allow air to circulate whenever you are not using your
hearing instrument, particularly overnight.
View of size 13 battery instruments (ITc, HS, FS)
Push-button
(optional)
Ventilation
opening
Push-button
ITC = In-The-Canal (optional)
HS = Half-Shell
FS = Full-Shell
1 or 2 microphone Sound outlet with
inlets with O-Cap wax filter (ProWax)
microphone filter
Volume wheel Ventilation
(optional) opening
7c