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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 312 battery instruments (ITc, HS, FS)
1 or 2 microphone
openings with O-Cap
microphone filter
Push-button
(optional)
Ventilation opening
Volume control wheel
(optional)
Push-button
Sound outlet with
(optional)
ProWax wax
protection system
Battery door
Ventilation opening
7b
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