SPEEDMASTER
MOONWATCH OMEGA CO-AXIAL CHRONOGRAPH 44.25 MM
Steel on steel
Caliber
9300
311.30.44.51.01.002
V
Co-Axial escapement
]
Si14 silicon balance spring
l
Automatic
U
Chronometer
i
Time zone function
Z
Tachymeter
o
Sapphire crystal
t
Anti-reflective treatment on both sides
D
Sapphire crystal case back
T
Water-Resistant to a relative pressure of 10 bar
(100 metres/330 feet)
WATCH FUNCTIONS
The crown has 3 positions:
1. Normal position (wearing position): when the crown is positioned against the
case, the crown ensures that the watch is water-resistant.
Occasional winding: if the watch has not been worn for 60 hours or more, wind it
up with the crown in position 1.
2. Setting the time zone and correcting the date: pull the crown out to position
2. Turn the crown forwards or backwards, and the hour hand will move forwards or
backwards by 1-hour intervals. By passing the hour hand over midnight, the date
can be changed forwards or backwards. Push the crown back to position 1.
NB: when changing the time zone backwards, it is necessary to move the hour
hand back past 7 pm to ensure the date changes.
3. Time setting: hours – minutes – seconds. Pull the crown out to position 3. The
seconds hand will stop. Turn the crown forwards or backwards. Synchronise the
seconds by pushing the crown back to position 1 to coincide with a given time
signal.
Timing to 1/8 of a second for up to 12 hours.
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