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Controlling the volume (optional)
left ear
right ear
forwards
forwards
backwards
backwards
Preset volume
Automatically set when hearing system
is switched ON.
To increase volume
Turn the volume control forwards.
To reduce volume
Turn the volume control backwards.
029_0999_02_GB_Certena_SR.qxp:029_0999_02_GB_Certena_SR.qxp 19.10.2009 12:52 Uhr Seite 19