Omega SA 1680 Manual & Self-winding watch, Calibres 1120, 2500, 2520, 2610 fig. III 2300 fig

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Manual & Self-winding watch

CALIBRES 1120, 2500, 2520, 2610 (fig. I)

• 2627 (fig. III) • 2300 (fig. IX)

The crown has 3 positions, but only positions 1 and 3 are

16functional for cal. 1120 jewellery version (fig. IV).

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

Occasional winding: if the watch has not been worn for 44 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 backwards and push it back to position 1.

For calibre 2610 only: date adjustment is made by instantaneous jumps.

NOTE: date-setting is not recommended between 8pm and 2am.

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.

Power reserve (cal. 2627)

Counter at 9 o’clock: small seconds.

Counter at 6 o’clock: power reserve indicator.

When the watch is fully wound, the power reserve indicator hand points to 4/4. This means that the power reserve is at least 44 hours.

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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 1376, 1456 fig Quartz WatchCalibres 1426, 1530, 1532 fig Calibres 1424, 1538 figCalibre 4000 fig. IIbis Time setting by pressing the correctorCalibres 1424 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 StopCalibres 1120, 2500, 2520, 2610 fig 2627 fig. III 2300 fig Power reserve cal Counter at 9 o’clock small secondsManual & Self-winding watch Calibre 2201 Manual-winding Power reserveCrown has 2 positions Self-winding chronograph Pusher B reset after a stopCalibres 3205 fig. XV 3220 fig. Xiii 3601 Regatta function calApnea function based on a 14 minute dive Regatta functionApnea function cal 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 watchesPressure is gradually increased to Helium escape valveHelium escape valve fig Not functional, since it is screwed How to use the helium escape valve figExample calculating the speed of a car Using the tachymetric scaleTachymetric scale Rubber strap Rubber strap Foldover clasps Adjusting the lengthSnap-fastening foldover clasps Opening ClosingClosing fig Adjusting the length figFoldover clasps with pushers Opening 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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