User Manual

* Button A / B does not function during resetting the stopwatch.

Stopwatch reset (incl. after replacing battery)

This procedure should be performed when the stopwatch second hand

does not return to the ZERO second position after the stopwatch has been

reset, and including after the battery has been replaced.

JS50 / JS54 Operating Instructions (Chronograph)

RESET STOPTIME MEASUREMENT

“A”

“A” “B”