The Omega Constellation Ladies (Ref. 1591.71.00) is a women’s automatic watch produced during the 2000s, characterized by compact proportions and some of the most recognizable elements of the Constellation family: a Roman numeral bezel, lateral claws, mother-of-pearl dial, and stainless steel bracelet integrated into the case.
It is aimed primarily at those looking for a compact Swiss dress watch with an immediately recognizable aesthetic identity. The presence of an automatic mechanical movement and date display also distinguishes it from many small women’s watches of the same period built around quartz movements.
Its appeal lies precisely in the balance between compact dimensions, mechanical construction, and Constellation design: rather than simply being a miniaturized men’s model, it is an interpretation of the collection built around distinctly feminine proportions.
Design
The white mother-of-pearl dial is the focal point of the watch. Its surface does not display a perfectly uniform color: depending on how the light strikes it, pearlescent reflections and subtle chromatic variations emerge, giving the dial a more dynamic appearance without making it overly conspicuous.
The applied hour markers, with their pyramidal geometry, introduce depth and small points of reflection. The central hands are slender and linear, proportioned to the available space, while the date window at 3 o’clock is framed by a metal surround that visually separates it from the mother-of-pearl surface.
The most distinctive choice, however, is the decision to move part of the graphic information onto the bezel. The dark Roman numerals mark the outer perimeter while leaving the dial relatively uncluttered. The four lateral claws interrupt the circular profile of the bezel and represent one of the most recognizable features of the modern Constellation generation.
The bracelet also plays a direct role in the design. Its broad horizontal links follow the geometry of the case without a clear visual separation, creating a sense of continuity that distinguishes the model from a traditional dress watch fitted with a strap or bracelet between conventional lugs.
Case & Construction
The case is made of stainless steel and measures approximately 27.5 mm in diameter, with a thickness of around 8.8-9 mm. Its construction is compact, with the lugs essentially absorbed into the architecture of the integrated bracelet.
The lug-to-lug measurement of the case itself is approximately 31 mm. However, this should not be confused with the effective footprint created by the bracelet: the first integrated links extend outward before articulating downward, bringing the perceived longitudinal span on the wrist to approximately 38 mm. This is an important distinction because, with this type of construction, the lug-to-lug measurement alone does not fully describe how the watch wears.
The bezel is fixed and incorporates the Roman numerals together with the four characteristic claws of the collection. The dial is protected by a sapphire crystal, while the caseback is made of steel.
Available documentation is not entirely consistent regarding the original water resistance: figures of 30 meters / 3 ATM and 50 meters / 5 ATM are reported for the model. In the absence of a conclusive official specification applicable to the individual example, it is more appropriate to preserve this discrepancy rather than arbitrarily select the higher figure.
On a watch of this age, moreover, the original rating cannot establish its current water resistance. Before any significant exposure to water, the condition of the gaskets and a recent pressure test are decisive.
Movement
The movement is one of the aspects that requires particular caution when documenting this Constellation. Model-specific sources consulted associate the watch with the Omega Caliber 2520, a Swiss automatic mechanical movement configured for hours, minutes, central seconds, and date.
Power reserve information is also inconsistent. Some secondary sources referring specifically to the model indicate a power reserve of approximately 32 hours, while other information previously associated with the watch suggested figures around 40 hours. In the absence of conclusive Omega technical documentation, the approximately 32-hour figure can be used with the explicit qualification that it comes from secondary sources.
It would not, however, be appropriate to automatically attribute an oscillation frequency, jewel count, hacking seconds, or other characteristics derived from apparently related movements without specific verification. This is particularly important for a discontinued model, as online specifications can easily combine data from different variants within the same collection.
From a buyer’s perspective, the presence of an automatic movement makes this small Constellation particularly interesting compared with the numerous quartz-powered women’s watches from the same period. The condition of the individual caliber and its service history, however, now have greater practical relevance than the performance figures stated when the watch was new.
Functions & Complications
The functional configuration remains straightforward: hours, minutes, and central seconds are accompanied by a date display at 3 o’clock.
The metal frame around the window helps visually separate the date indication from the iridescent dial surface. There are no additional complications, while automatic winding is a characteristic of the movement rather than a complication.
Performance
The approximately 27.5 mm diameter clearly places the watch within the realm of traditionally compact women’s models. More interesting, however, is the relationship between the case’s approximately 31 mm lug-to-lug measurement and the effective extension of the first bracelet links, which brings the initial longitudinal footprint to around 38 mm. The Constellation therefore appears more substantial on the wrist than its diameter alone might suggest.
Its profile of less than 10 mm, on the other hand, favors formal wear: the case passes easily beneath a shirt cuff without creating the bulk typically associated with thicker automatic watches.
The integrated construction makes the condition of the bracelet particularly important. On a pre-owned example, it is advisable to check play between the links, articulation of the first sections, the clasp, and the availability of any additional links. On this model, the bracelet is not simply a replaceable accessory but an essential component of both the fit and the aesthetic identity.
There do not appear to be luminescent features significant enough to make nighttime legibility a central aspect of the design. This is a limitation compared with a watch intended for sporting use, but it is consistent with the model’s predominantly elegant character.
Technical Data
Brand: Omega Watches;
Model: Omega Constellation Ladies (Ref. 1591.71.00);
Year: 2000-2010;
Case Material: Stainless Steel;
Case Diameter: ~27,5 mm;
Case Thickness: ~8,8-9 mm;
Lug Width: Integrated Bracelet – Not Applicable;
Lug-to-Lug: ~31 mm;
Crystal: Sapphire Crystal;
Water Resistance: 50 m / 165 ft (5 ATM);
Power Reserve: ~40 hours;
Movement: Automatic Mechanical Watches – Omega Caliber 2520 (Swiss Movement);
Functions: Hours, Minutes, Seconds, Automatic Winding;
Complications: Date Display;
Bracelet / Strap: Integrated Stainless Steel Bracelet;
Type: Calendar Watches, Classic Watches, Dress Watches, Luxury Watches, Mythology & Cosmos Watches;
Sex: Women’s Watches;
Nationality: Swiss Watches.
Retail Price (Launch): €2.200 / $2.350.
This Omega Constellation is particularly interesting for the way it concentrates the collection’s aesthetic language into a very small case. Mother-of-pearl, Roman numerals, claws, and the integrated bracelet create a recognizable identity without relying on large dimensions or particularly conspicuous elements.
Among its strengths are the automatic movement, sapphire crystal, slim profile, and above all the integrated construction of the case and bracelet. Its dimensions can be considered an advantage if you are deliberately looking for a genuinely compact women’s watch, rather than a contemporary model that has simply been downsized.
The compromises largely stem from the age and very nature of the watch. Its power reserve is modest compared with modern automatic calibers, nighttime legibility is not a priority, and the integrated bracelet makes its condition, length, and the availability of additional links particularly important. Added to this is the inconsistent documentation surrounding some technical specifications, which requires caution when evaluating a pre-owned example.
Its value for money on today’s market cannot be assessed correctly from the historical retail price alone. For a watch of this generation, factors such as dial originality, case condition, bracelet wear, completeness of the set, and above all the condition of the movement have a substantial impact.
The verdict, therefore, is that of a compact mechanical dress watch with a strong Constellation identity. It makes more sense if you value the Omega design language of that period, the mother-of-pearl dial, and the integrated case-and-bracelet architecture than if you are looking for high technical performance or the versatility of a modern sports watch.
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