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EXTERNAL SPEAKER/MICROPHONE JACK
Your ROGER 18 Series can be used with an optional
external speaker/microphone or headset, freeing your hands for other
tasks. To use an optional speaker / microphone or headset:
LInsert the plug(s) into the SPK/MIC jacks
LPlace the earbud into your ear, and adjust the
mic into your desired position.
ROGER 18 Series