Self-winding GMT & GMT Chronograph

Occasional winding: if the watch has not been worn for 44 hours (cal. 1128, 2628) or 55 hours (cal. 3603) or more, wind it up with the crown in position 1.

2.Setting the time zone: pull the crown out to position 2 and turn it. Only the hour hand moves (clockwise or anticlockwise), without affecting the precision of the minutes or seconds. If the hand moves past midnight, the date changes automatically. Push the crown back to position 1.

Setting the date: pull the crown out to position 2, turn it forwards or backwards to change the date each time the hour hand passes midnight. The date moves forwards (or backwards) one day. Repeat until the required date is obtained. Push the crown back to position 1.

Synchronisation of the hour hand and the “24-hour” hand (calibre 1128, fig. VI)

The triangle on the rotating bezel must point to 12 o’clock on the dial.

Pull the crown out to position 2 and turn it to syn- chronise the hour hand with the time indicated by the “24-hour” hand on the 24-hour scale on the rotating bezel. Make sure you set the hour hand in the correct half of the day! Push the crown back to position 1.

Synchronisation of the hour hand and the “24-hour” hand (calibre 2628, fig. VII, calibre 3603, fig. XX)

Pull the crown out to position 2 and turn it to syn- chronise the hour hand with the time indicated by the “24-hour” hand on the 24-hour scale in the centre of the dial. Make sure you set the hour hand in the cor- rect half of the day!

After synchronising the hour hand with the “24-hour” hand, you must set the local time on your watch. Push the crown back to position 1.

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Omega SA 2520, 2500, 1538, 1120, 1400, 1532, 1108, 1680, 1424, 1530 manual Self-winding GMT & GMT Chronograph
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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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