Omega 1109

The Omega 1109 movement is a self-winding mechanical caliber developed by Omega, known for its integration into a selection of the brand's timepieces. This movement is also recognized by its alternative designations, Cal. 1109 and ETA 2892-A2, reflecting its foundational architecture. As an automatic movement, it harnesses the wearer's motion to wind the mainspring, eliminating the need for manual winding under regular use. At its core, the Omega 1109 features 21 jewels, which are synthetic rubies strategically placed at points of high friction within the gear train. These jewels serve to reduce wear and tear on metal components, contributing to the movement's longevity and consistent performance. The movement operates at a frequency of 28,800 vibrations per hour (vph), which translates to 4 Hz. This high frequency contributes to the movement's accuracy by providing more stable oscillations of the balance wheel, and it also results in a smoother sweep of the seconds hand across the dial, a visual indicator of its mechanical precision. A practical power reserve of 44 hours allows a watch equipped with the Omega 1109 to remain unworn for nearly two full days while still keeping accurate time. This provides convenience for the wearer, who can set the watch aside for a weekend without it stopping. With a diameter of 25.6 mm and a height of 5.3 mm, the movement's compact dimensions facilitate its integration into a variety of watch case sizes and designs. The lift angle of 48° is a technical specification important for watchmakers when regulating the movement. Furthermore, the Omega 1109 is a chronometer-certified movement, indicating that it has undergone rigorous testing by an independent body to meet specific standards for accuracy and reliability under various conditions. The Omega 1109 provides essential timekeeping functions, including hours, minutes, and seconds, displayed centrally on the dial. A date complication is also integrated, offering the practical utility of displaying the current day of the month, which is a frequently referenced piece of information for the wearer. This caliber powers various Omega Seamaster models, demonstrating its versatility across different collections. Examples of watches utilizing the Omega 1109 include the Omega Seamaster Diver 300M Automatic 41 Yellow Gold / Blue / Bracelet / Bond (Ref. 2133.80.00) at 41mm, the Omega Seamaster 120M Automatic 36.25 Yellow Gold / Blue (Ref. 2101.81.00) at 36.25mm, the Omega Seamaster 120M Automatic 36.25 Yellow Gold / White (Ref. 2101.21.00) at 36.25mm, the Omega Seamaster Diver 300M Automatic 36.25 Yellow Gold / Blue / Bracelet (Ref. 2153.80.

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Also Known As

Watches Using This Caliber(19)

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