Omega SPEEDMASTER MOONWATCH User Manual

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.
1 / 2

Omega SPEEDMASTER MOONWATCH Specifications

General

Clock mode	12h
Shockproof	-
Chronograph	Yes
Power reserve	60 h
Mechanism type	Mechanical (auto winding)
Movement model	9300
Watch dial type	Analog dial
Movement manufacturer	Omega
Gender	Male
Case shape	Round
Watch glass type	Sapphire
Watch marker color	Black
Watch marker style	Arabic numerals/Non numeral
Watch case material	Stainless steel

Summary

Watch Functions

Normal Crown Position and Winding

Describes the crown's normal position for water resistance and occasional winding of the watch.

Setting Time Zone and Correcting Date

Explains how to adjust the hour hand for time zones and change the date using the crown.

Setting Time (Hours, Minutes, Seconds)

Details setting hours, minutes, and seconds, and synchronizing the seconds hand.

Tachymetric Scales

Understanding Tachymetric Scale Usage

Explains how to read the tachymetric scale with the chronograph seconds hand for duration-based measurements.

Example: Calculating Vehicle Speed

Demonstrates using the tachymetric scale to calculate the speed of a car covering one kilometer.