Omega SA 2500, 2520, 1538 Self-winding chronograph with date, Calibre 3304 fig, Calibre 1151 fig

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Self-winding chronograph with date

CALIBRES 1151 (fig. XI) • 1152, 1164 (fig. XII)

3301, 3303, 3313 (fig. XIV) • 3304 (fig. XIX) The crown has 3 positions:

20Watch functions:

1.Normal position (wearing position): when pushed into the case, the crown ensures that the watch is water-resistant.

Winding: if the watch has not been worn for 45 hours or more, wind it up with the crown in position 1.

2.Date setting: pull the crown out to position 2, turn the crown forwards (backwards for cal. 1151), then push the crown back to position 1.

NOTE: the date cannot be corrected between 9pm and 12.30am or 4am (cal. 1151).

CALIBRE 3304 (fig. XIX)

Changing the date: press the corrector C at 10 o’clock.

CALIBRE 1151 (fig. XI)

Date setting: pull the crown out to position 2, turn the crown backwards, then push the crown back to position 1. Changing the day: press the corrector C at 10 o’clock. Changing the month: automatic each time the date hand passes 31.

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.

Chronograph functions:

Pusher A: start – stop, start – stop etc. Timing to 1/8th of a second for up to 12 hours.

Pusher B: reset (after a stop).

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Operating Instructions Viii Xviii Contents Special recommendations What are the service intervals?Leather straps Environmental protectionScrew-in crown Anti-reflective treatmentValid for U.S.A. only Omega International WarrantyOmega SA Rue Stämpfli 96, 2500 Bienne Omega International Warranty Above manufacturer’s warranty Calibres 1376, 1456 fig Quartz WatchCalibres 1426, 1530, 1532 fig Calibres 1424, 1538 figTime setting by pressing the corrector Calibres 1424Calibre 4000 fig. IIbis Calibre 1270 fig Quartz chronographWatch functions Chronograph functionsCalibre Pusher B ResetSimple timing function crown in position Pusher a Start stop read timePusher a Start Addition function crown in positionPusher a Stop to read time Pusher a Press again to restart Pusher a Stop Power reserve cal Counter at 9 o’clock small seconds Manual & Self-winding watch Calibres 1120, 2500, 2520, 2610 fig 2627 fig. III 2300 fig Power reserve Crown has 2 positionsCalibre 2201 Manual-winding Self-winding chronograph Pusher B reset after a stopCalibres 3205 fig. XV 3220 fig. Xiii 3601 Regatta function calRegatta function Apnea function calApnea function based on a 14 minute dive Calibre 3304 fig Self-winding chronograph with dateChanging the date press the corrector C at 10 o’clock Calibre 1151 figWatch functions calibre Self-winding split seconds chronographChronograph functions with split seconds Self-winding split seconds chronographCalibres 1861, 1863 fig. XV 1866, 3604 fig Manual-winding chronographDate setting small counter at 12 oclock press corrector C Calibre 1866-Date and moon phase correctionPerpetual calendar Setting the hands minutes and secondsCalibre 1680 fig ThermocompensationDisplay and correction of the month Display and correction of the yearly cycle Calibres 1128 fig. VI 2628 fig 3603 fig Self-winding GMT & GMT ChronographSelf-winding GMT & GMT Chronograph Second Time Zone calibre 1128, fig Coincide with a given time signalBi-directional turning bezel calibre Second Time Zone calibre 2628, fig. VII, calibre 3603, figDays 14,15 Position Temperature 23C Days Position Temperature 23C32 -1 to +6 seconds per day Precision tolerancesOther Omega mechanical watches Quartz watchesHelium escape valve Helium escape valve figPressure is gradually increased to Not functional, since it is screwed How to use the helium escape valve figUsing the tachymetric scale Tachymetric scaleExample calculating the speed of a car Rubber strap Rubber strap Foldover clasps Adjusting the lengthSnap-fastening foldover clasps Opening ClosingAdjusting the length fig Foldover clasps with pushers Opening figClosing fig Pictograms