Omega SA 1680, 2520, 2500, 1538, 1120, 1400, 1532, 1108, 1424, 1530 Display and correction of the month

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Perpetual calendar

1.3.Setting the date and hour hands: Pull the crown out to position 2.

Then turn the crown: the hand moves in 1-hour jumps. If it is necessary to correct the date, (A),

26continue to turn the crown and the date will change automatically when switching from AM to PM, or the contrary, depending on the direction the crown is turned. Then push the crown back to position 1.

Important:

When setting the date, it is essential to check the date. If need be, pass midday (no date change) or midnight (date changes) to make sure the time is set in AM or PM as appropriate.

NB: Corrections in position 3 have no effect on the date, even if the hour hand passes midday or midnight. The watch stores the date in its mem- ory (including whether AM or PM) before the time is reset. Setting the hours, minutes and seconds, around midnight and midday may therefore result in the calendar shifting by 12 hours.

2.Checking and correcting the calendar: month, yearly cycle and date.

2.1.Display and correction of the month.

Press and hold the crown in position 0 for more than 3 seconds, the month will be displayed for 8 seconds,

(B). 1 = January, 2 = February, ..., 12 = December. The month can be corrected during these 8 seconds. Pull the crown out to position 2, turn the hour hand through one full revolution. The month will move forwards or backwards.

Repeat the procedure until the required month is displayed, then put the crown back to position 1.

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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 figTime setting by pressing the corrector Calibres 1424Calibre 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 restartPower reserve cal Counter at 9 o’clock small seconds Manual & Self-winding watchCalibres 1120, 2500, 2520, 2610 fig 2627 fig. III 2300 fig Power reserve Crown has 2 positionsCalibre 2201 Manual-winding Regatta function cal Pusher B reset after a stopSelf-winding chronograph Calibres 3205 fig. XV 3220 fig. Xiii 3601Regatta function Apnea function calApnea 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 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 Closing Adjusting the lengthFoldover clasps Snap-fastening foldover clasps OpeningAdjusting the length fig Foldover clasps with pushers Opening figClosing fig Pictograms

1120, 1680, 1108, 1532, 1538 specifications

Omega SA, a renowned Swiss luxury watch manufacturer, is celebrated for its precision timepieces, with a history spanning over 170 years. Among its notable innovations are the Omega SA 1400, 1530, 2500, 1424, and 2520 models, each representing a fusion of cutting-edge technology, meticulous craftsmanship, and timeless design.

The Omega SA 1400 is recognized for its automatic movement that embodies reliability and robustness. This model features a classic design bolstered by a stainless steel case, ensuring durability while maintaining a sophisticated appearance. The 1400 utilizes an intricate balance wheel, which enhances its accuracy and provides a power reserve that withstands the test of time.

The Omega SA 1530, meanwhile, is a standout for its pioneering co-axial escapement technology. This innovative mechanism, developed by George Daniels in the 1970s, offers greater precision and stability, as well as reduced friction between the moving parts. The 1530’s dial boasts a clean aesthetic, accented by elegant hour markers and hands, making it suitable for both formal and casual settings.

Next, the Omega SA 2500 model highlights a blend of heritage and modern aesthetics. It features a distinctive skeletonized movement that allows wearers to appreciate the intricate workings of the watch. This model is equipped with anti-magnetic technology, protecting its inner mechanisms from electromagnetic fields, thus ensuring its continued accuracy in everyday life.

The Omega SA 1424 is particularly notable for its bold design and robust construction. It is often viewed as a new generation of dive watches, equipped with luminous markers for visibility in low-light conditions. The water resistance of the 1424 ensures it can withstand the rigors of underwater exploration, making it an ideal companion for adventure enthusiasts.

Lastly, the Omega SA 2520 model stands out with its sophisticated chronograph function. This timepiece is optimized for precision timing with additional features such as a tachymetric scale, allowing users to measure speed over distances. The 2520 boasts a dynamic design, often adorned with a striking bezel and a combination of polished and brushed finishes, ensuring it remains a statement piece on any wrist.

In summation, Omega SA’s 1400, 1530, 2500, 1424, and 2520 models exemplify the brand’s commitment to excellence in horology. Each of these timepieces showcases unique features and innovations while retaining the classic elegance that Omega is known for, making them coveted additions to any watch collection.
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