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OMEGA constellation deville seamaster speedmaster specialities

Constellation 25 mm, steel ‑ Sedna™ gold on steel ‑ Sedna™ gold

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The dramatic and enduring design of the OMEGA Constellation is characterised by its famous half-moons, “claws” on the case and mono-rang bracelet.

This 25 mm 18K Sedna™ gold and stainless model features a bezel engraved with Roman numerals, white mother-of-pearl dial and scratch-resistant saphire crystal. The hands, OMEGA logo, Constellation star and indexes are also in 18K Sedna™ gold.

At the heart of this timepiece is the OMEGA Calibre 4061, while the caseback is stamped with the Constellation Observatory medallion.

Reference
131.20.25.60.05.001
Between lugs
15.9 mm
Lug‑to‑lug
27.5 mm
Thickness
8.1 mm
Case diameter
25 mm
Case
Steel ‑ Sedna™ gold
Dial colour
White
Crystal
Domed scratch‑resistant sapphire crystal with anti‑reflective treatment on both sides
Water resistance
3 bar (30 metres / 100 feet)
Total product weight (approx.)
76 g
Calibre
Omega 4061
Movement Type
Quartz
Battery life
48 months
Material
Steel ‑ Sedna™ gold
Type of Clasp
Butterfly clasp with comfort setting
Calibre OMEGA 4061 Quartz movement with "Long Life" feature to maximize the autonomy of the battery. Exclusive red OMEGA logo with rhodium plated parts and circular graining.
Product sheet

Key materials

  • Material - Sedna<sup>TM</sup> Gold

    SednaTM Gold

  • Material - Stainless Steel

    Stainless Steel

  • Material - Mother-of-pearl

    Mother-of-pearl

  • Material - Sapphire Crystal

    Sapphire Crystal

SednaTM Gold

OMEGA has been using the exclusive 18K SednaTM Gold, its own fiery rose gold alloy, since 2012. Named after Sedna, an orbiting planetoid that has been described as one of the reddest in the solar system, SednaTM Gold not only bears all the standard characteristics of other 18K golds, but it also offers high resistance to the fading of colour and lustre over time. Its unique composition includes copper and palladium for colour and stability.

Stainless Steel

Stainless steel is certainly the most conventional of watchmaking materials for outer craftsmanship, and offers beauty, strength and affordability. OMEGA uses 316L stainless steel. Known for its corrosion-resistance and high lustre after polishing, this material is often the ideal choice for watches in both daily-use and high-stress situations such as diving and adventure.

Mother-of-pearl

Also known as "nacre", mother-of-pearl is an organic-inorganic composite material produced by some molluscs as an inner shell layer, similar to pearls. It is strong, resilient and iridescent, with changing colours depending on the wavelengths of light at different viewing angles. Produced with exquisite skill and delicacy, OMEGA's ladies' collection offers mother-of-pearl dials of top quality, enhanced with specific attributes.

Sapphire Crystal

To really appreciate the finer details of a timepiece, OMEGA uses synthetic sapphire crystal with a highly scratch-resistant and anti-reflective treatment. Before the machining and finishing processes take place, the sapphire crystals are produced under the Verneuil process, also called flame fusion. It involves the melting of the raw substance using oxyhydrogen flame and the crystallisation of the melted droplets to form a cylinder. Graded 9 on the Mohs-hardness scale (graded 1-10), the resulting sapphire crystals are virtually scratch-proof and very hard, ensuring an unhindered vision at all times.

The advantages
of this watch

When it comes to reliability there’s no matching a movement bound by natural law. This watch’s internal workings uses the very precise frequency signal of a quartz crystal to display time. The movement is powered by a battery and extremely accurate. What’s more it takes up minimal space, allowing for slimmer watch designs.