The Omega Speedmaster Professional has a legacy etched in the annals of horological history, inextricably linked to space exploration and enduring style. While the iconic Moonwatch, with its hand-wound calibre 1861 or 321, often steals the spotlight, other Speedmaster references offer compelling alternatives, each with its own unique character. This article focuses on the captivating Omega Speedmaster ref. 3311.20, a two-tone masterpiece that blends the robust functionality of the Speedmaster with the elegance of 18k yellow gold and stainless steel. We'll explore its specifications, its place within the Speedmaster lineage, its current market value, and discuss alternative automatic movements within the broader Omega ecosystem.
The Allure of the 3311.20: A Bi-Metallic Beauty
The Omega Speedmaster Professional ref. 3311.20 stands out for its striking two-tone design. The combination of brushed stainless steel and polished 18k yellow gold creates a watch that is both sporty and sophisticated. The gold accents are tastefully applied to the bezel, crown, and central links of the bracelet, enhancing the watch's overall presence without sacrificing its inherent ruggedness. This model embodies a perfect blend of casual elegance and robust functionality, making it a versatile timepiece suitable for various occasions. The black dial, with its familiar Speedmaster layout – including the three sub-dials, tachymeter scale, and applied indices – remains instantly recognizable, ensuring its place within the iconic Speedmaster family. The inclusion of luminous hands and markers ensures excellent legibility in low-light conditions, a crucial feature inherited from its tool-watch origins.
The Calibre 1152: An ETA 7750 Base
The heart of the Omega Speedmaster 3311.20 is the calibre 1152. This automatic chronograph movement is based on the renowned ETA 7750, a highly reliable and widely respected workhorse in the watchmaking industry. While some purists might prefer the hand-wound movements found in the "true" Moonwatches, the calibre 1152 offers the convenience of automatic winding, eliminating the need for manual winding. The ETA 7750 base provides a solid foundation for the 1152, offering robust performance and a well-established track record of reliability. However, it's important to note that Omega extensively modifies and finishes the ETA 7750 before incorporating it into their watches, adding their own quality control and aesthetic touches. This means the calibre 1152, while based on the ETA 7750, is distinctly an Omega movement in terms of its final execution and performance.
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