Omega Caliber 1866 Speedmaster

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SPEEDMASTER

MOONWATCH PROFESSIONAL MOONPHASE CHRONOGRAPH 44.25 MM

Steel on leather strap

Caliber

1866

311.33.44.32.01.001

Manual

Moonphase

Tachymeter

Sapphire crystal

Anti-reﬂective treatment on both sides

Sapphire crystal case back

2-year International Warranty

Water-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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Summary

Watch Functions

Normal Position (Wearing Position)

Crown in normal position ensures water resistance; turn forwards for winding. Do not overwind.

Time Setting

Pull crown to position 2 to set time. Synchronise seconds by gently turning crown backwards.

Chronograph Functions

Date and Moon Phase Correction

Tachymetric Scales

Foldover Clasps