Omega Caliber 1866 Speedmaster User manual

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SPEEDMASTER

MOONWATCH PROFESSIONAL MOONPHASE CHRONOGRAPH 44.25 MM

Steel on leather strap

Caliber

1866 311.33.44.32.01.001

cManual

/Moonphase

ZTachymeter

oSapphire crystal

tAnti-reﬂective treatment on both sides

DSapphire crystal case back

E2-year International Warranty

TWater-Resistant to a relative pressure of 10 bar

(100 metres/330 feet)

WATCH FUNCTIONS

The crown has 2 positions:

1. Normal position (wearing position): when the crown is positioned against the

case, the crown ensures that the watch is water-resistant.

Winding: turn the crown forwards until it stops (DO NOT OVERWIND).

Note: do not wind the watch more often than is necessary. For a watch that is

worn all the time, a single winding each day will ensure that it functions correctly.

2. Time setting: hours – minutes – seconds. Pull the crown out to position 2. Turn

the crown forwards or backwards. Synchronise the seconds by pushing the crown

back to position 1 to coincide with a given time signal.

Note: The calibre does not have a ’stop second’ mechanism. To synchronise, the

crown should be gently turned backwards and pressure maintained to stop the

seconds hand. Release when the display corresponds to the timing signal and

push crown back to position 1.

CHRONOGRAPH FUNCTIONS

• Pusher A: start – stop, start – stop, etc

Timing to 1/6 of a second for up to 12 hours.

• Pusher B: reset (after a stop).

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DATE AND MOON PHASE CORRECTION

Correcting the date (small counter at 12 o’clock): press corrector (C).

Correcting the moon phase: press corrector (D) to move the disc into the full-

moon position. Then determine how many days have elapsed since the last full

moon (consult a calendar) and press the corrector the equivalent number of

times.

When the watch is running, the date and moon phase move forward

automatically.

Important: avoid pressing correctors (C) and (D) (date and moon phase) if the

watch is displaying any time between 7 and 12 o’clock (am or pm).

Do not set the date by moving the hour hand past midnight, since this may

desynchronise the date and moon phase indicators.

TACHYMETRIC SCALES

The desired information is read between the central seconds hand of the

chronograph and the corresponding scale, over a maximum duration of 60

seconds.

Example: calculating the speed of a car.

Record the time the car takes to cover a distance of 1 kilometre. Read off the

tachymetric scale the speed indicated by the central seconds hand. In this case,

the car is travelling at 120 km/h.

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).



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.

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