SIGMA ONYX CLASSIC - Manual (Page 32)

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4. TRAINING WITH THE ONYX CLASSIC
Active mode
Press any button for 2 seconds to activate the
watch.
Your ONYX CLASSIC is equipped with a digital coded chest belt
that enables you to have fault-free training in a group. Its inno-
vative technology means that you can be sure that your data is
transmitted from the chest belt to your ONYX CLASSIC as digital
packages without loss.
Synchronisation between watch and chest belt
In active mode, the watch is automatically syn-
chronised with the attached chest belt in a few
seconds. A flashing zero appears on the screen
until synchronisation has finished.