Hourly Chime; Chronograph - mcmurdo Guardian MOB Beacon Watch User Manual

121.5mhz man overboard alarm watch
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3.4 Hourly Chime

Chime is activated by pressing and holding Reset, then pressing Mode once; the
SU through SA flags appear.
Deactivate Chime by pressing and holding Reset then pressing Mode once; the SU
through SA flags disappear.

3.5 Chronograph

Press Mode once to enter Chronograph mode; the SU, FR, SA flags flash. Pressing
the Start button starts and stops the time display; the time accumulates on
successive starts. Reset sets the timer to 0:00:00. Note that the colon sign flashes
whenever timing is running.
Whilst timing is running, pressing Reset puts the watch into Lap Time mode; the
SU, TH, SA flags flash. This freezes the display whilst the timing continues in the
background. Pressing Reset again updates the display; pressing Reset yet again
freezes the display, and so on. The time is reset to 0:00:00 by pressing Start while
the display is counting, and then pressing Reset.
To return to normal timekeeping, press Mode once.
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