Maurice Lacroix ISA 8171 Gebrauchsanweisung Seite 6

Measuring cumulative times
START
A
4.1
START
A
4.3
RESET
4.5
B
STOP
A
4.2
STOP
A
4.4
After 2 hours of continuous running, the chrono stops
and resets automatically to save the battery.
5