Omega 232.18.42.21.04.001 User manual

SEAMASTER

PLANET OCEAN 600M OMEGA CO-AXIAL 42MM

Steel on leather strap

Caliber

8500 232.18.42.21.04.001

VCo-Axial escapement

]Si14 silicon balance spring

lAutomatic

UChronometer

iTime zone function

oSapphire crystal

tAnti-reﬂective treatment on both sides

DSapphire crystal case back

dScrew-in crown

qHelium escape valve

bWatch with diamond(s)

éWater-Resistant to a relative pressure of 60 bar

(600 metres/2000 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.

1 / 3

HELIUM ESCAPE VALVE

How to use the helium escape valve? (ﬁg. 2)

In its normal position (ﬁg. 2.1), the OMEGA helium escape valve is perfectly

watertight thanks to the gaskets (B), but it is not functional, since it is screwed

down.

During the decompression phase, unscrew the crown of the valve in order to

release the mechanism (ﬁg. 2.2). The valve is now watertight from the outside.

As the interior pressure becomes greater than the exterior pressure, it pushes the

gasket (A) out of its seating, thus releasing the gas (ﬁg. 2.3). Once the pressure is

equalised, gasket (A) returns to its original position, pushed by the spring (C) (ﬁg.

2.2).

This operation is automatically repeated several times during the decompression

phase. Once atmospheric pressure is reached, screw down the crown of the valve

(ﬁg. 2.1).

Note: Even if the valve is unscrewed, and we strongly recommend that the valve

remains screwed down whenever the watch is immersed in water, the watch is still

water-resistant to a relative pressure of 5 Bar (50 metres). However, complete

water-resistance to the dial depth can only be achieved with gasket (B) and the

valve in the screwed down position.

FOLDOVER CLASPS

Opening (ﬁg. 1): to open the clasp, press the two pushers on either side of the

OMEGA buckle and pull upwards.



Closing (ﬁg. 2): put the watch on your wrist and close the clasp by pushing on it

with your thumb until you hear a click. (ﬁg. 2).

2 / 3



Adjusting the length (ﬁg. 3): free the longer section from the two slideways

(A) and from the catch (B). Adjust the bracelet in the required direction and

reinsert in the catch and the two slideways. Try the watch for size and readjust if

necessary.

3 / 3

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