The Omega De Ville Co-Axial GMT is powered by the self-winding caliber 2628, which is housed in a case of 38.7mm. For the reference 4533.31.00, both case and 'Snake' bracelet are stainless steel, while the dial is silver.
Movement Type
Automatic
Caliber
2628Jewels
27
Reserve
48
Frequency
25200
Hands
Center Seconds
Shape
Round
Material
Stainless Steel
Glass
Sapphire
Diameter
38.70 mm
Water Resistance
100.00 m
Dial Color
Silver
Material
Bracelet