Hama Mini Mode D'emploi page 23

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Muting the microphone
Muting the microphone during a call
During a call, press and hold the VOL+ button for approx. 2 seconds.
A periodic tone is heard in the speaker when the microphone is muted.
Turning mute off
When the microphone is muted, press and hold the VOL+ button for approx. 2-3 seconds.
The periodic tone can no longer be heard.
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