The Omega Seamaster, a name synonymous with elegance, durability, and a rich history of exploration, has captivated watch enthusiasts for decades. Within its iconic case, often beats a heart of remarkable precision and reliability – the ETA 255.461 movement. While not as immediately recognizable as some of Omega's in-house calibers, the ETA 255.461 holds a significant place in the brand's history, powering numerous Seamaster models and representing a crucial stage in Omega's evolution. This article will explore the ETA 255.461 in detail, examining its specifications, its place within the broader context of Omega movements, and its significance in the world of watchmaking. We'll also touch upon related movements, such as the Omega 1538, often discussed alongside the ETA 255.461, clarifying the connections and distinctions.
Understanding the ETA 255.461:
The ETA 255.461 is a self-winding, mechanical movement known for its robust construction and dependable performance. Produced by ETA, a renowned Swiss movement manufacturer (now part of the Swatch Group), it was widely used by Omega during a period of significant production. This widespread use speaks volumes about its quality and cost-effectiveness, allowing Omega to offer high-quality timepieces at competitive price points.
The movement's specifications typically include:
* Jewels: The exact jewel count may vary slightly depending on specific iterations, but it generally falls within the range of 25-27 jewels. These jewels reduce friction within the movement, contributing to its efficiency and longevity.
* Frequency: The balance wheel oscillates at a standard frequency of 28,800 beats per hour (8 Hz), providing a relatively high degree of accuracy.
* Power Reserve: The ETA 255.461 boasts a power reserve of approximately 40-44 hours. This means the watch will continue to run for a full day and a half after being fully wound, a respectable figure for a mechanical movement.
* Functions: The movement primarily offers hours, minutes, and seconds functionality. Some variations might include a date complication, adding practicality to its already robust features.
* Finishing: While not typically featuring the elaborate finishing found in high-end Omega movements, the ETA 255.461 is known for its reliable and functional construction. The focus is on precision and durability rather than elaborate decoration.
The Omega 1538 and its Connection to the ETA 255.461:
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