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OMEGA constellation deville seamaster speedmaster specialities
De Ville 38.7 mm, yellow gold on leather strap - 4633.30.31 - Image 1

De Ville 38.7 mm, yellow gold on leather strap

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Reference
4633.30.31
Between lugs
19 mm
Case diameter
38.7 mm
Case
Yellow gold
Dial colour
Silver
Crystal
Domed scratch‑resistant sapphire crystal with multi‑layered anti‑reflective treatment inside
Water resistance
10 bar (100 metres / 330 feet)
Watch size
Gents
Total product weight (approx.)
114 g
Calibre
Omega 2628
Movement Type
Self winding
Power reserve
48 hours
Strap color
Black
Strap type
Leather strap
Strap surface
Alligator leather
Buckle type
Foldover clasp
Buckle material
Yellow gold
Product sheet

Key materials

  • Material - Yellow Gold

    Yellow Gold

  • Material - Sapphire Crystal

    Sapphire Crystal

Yellow Gold

Gold in its pure form (24K) is slightly reddish yellow and very soft. It is usually alloyed with other base metals for a diverse variety of uses. Considered to be the premium standard in watch and jewellery making, 18K golds (with at least 75% pure gold) provides the ultimate balance between purity and usefulness. Traditional 18K yellow gold is alloyed with copper-silver and offers an excellent resistance to corrosion, while being highly bio-chemically inert. It provides a beautiful hue that suits wearers even with sensitive skin.

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.