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Omega SA 1530, 2520, 2500, 1538 Self-winding chronograph, Calibres 3205 fig. XV 3220 fig. Xiii 3601

Models: 1120 1680 1108 1532 1538 2520 1424 2500 1530 1400

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Self-winding chronograph

CALIBRES 3205 (fig. XV) • 3220 (fig. XIII) • 3601 • 3602

The crown has 2 positions:

18Watch 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.Time setting: hours – minutes – seconds. Pull the crown out to position 2. 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).

Regatta function (cal. 3602)

Based on a 10-minute start period, as used in the America’s Cup.

In addition to the counters for seconds, minutes and hours, this movement has an indicator that displays the countdown to a regatta start. This

indicator operates simultaneously with the chronograph hands. Each circle on the display corresponds to 1 minute.

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Omega SA 1530, 2520, 2500 Self-winding chronograph, Calibres 3205 fig. XV 3220 fig. Xiii 3601, Pusher B reset after a stop

Contents

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 1424, 1538 fig Quartz WatchCalibres 1376, 1456 fig Calibres 1426, 1530, 1532 figCalibres 1424 Time setting by pressing the correctorCalibre 4000 fig. IIbis Chronograph functions Quartz chronographCalibre 1270 fig Watch functionsPusher a Start stop read time Pusher B ResetCalibre Simple timing function crown in positionPusher a Stop Addition function crown in positionPusher a Start Pusher a Stop to read time Pusher a Press again to restartManual & Self-winding watch Power reserve cal Counter at 9 o’clock small secondsCalibres 1120, 2500, 2520, 2610 fig 2627 fig. III 2300 fig Crown has 2 positions Power reserveCalibre 2201 Manual-winding Regatta function cal Pusher B reset after a stopSelf-winding chronograph Calibres 3205 fig. XV 3220 fig. Xiii 3601Apnea function cal Regatta functionApnea function based on a 14 minute dive Calibre 1151 fig Self-winding chronograph with dateCalibre 3304 fig Changing the date press the corrector C at 10 o’clockWatch 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 correctionThermocompensation Setting the hands minutes and secondsPerpetual calendar Calibre 1680 figDisplay 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 2628, fig. VII, calibre 3603, fig Coincide with a given time signalSecond Time Zone calibre 1128, fig Bi-directional turning bezel calibreDays 14,15 Position Temperature 23C Days Position Temperature 23CQuartz watches Precision tolerances32 -1 to +6 seconds per day Other Omega mechanical watchesHelium escape valve fig Helium escape valvePressure is gradually increased to Not functional, since it is screwed How to use the helium escape valve figTachymetric scale Using the tachymetric scaleExample calculating the speed of a car Rubber strap Rubber strap Closing Adjusting the lengthFoldover clasps Snap-fastening foldover clasps OpeningFoldover clasps with pushers Opening fig Adjusting the length figClosing fig Pictograms