Operation Manual

You have decided to purchase the
TRELOCK bike computer FC 820 /
FC 830 / FC 840 (each with Uni-Base) or
FC 845 (Night-Light-Base) and, as such,
your choice is an excellent one. Your new
bike computer is easy and convenient
to operate thanks to the visual guidance
system and large mono-button typical of
TRELOCK products. Please read through
this manual prior to your initial usage of
the computer.
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