The Omega Railmaster 2812.52.31 has a 42.2mm steel case housing self-winding calibre 3205, on a black alligator strap.
Movement Type
Automatic Chronograph
Caliber
3205Jewels
33
Reserve
55
Frequency
28800
Hands
Small Seconds
Shape
Round
Lug Distance
21.00 mm
Material
Stainless Steel
Glass
Sapphire
Diameter
42.20 mm
Water Resistance
150.00 m
Dial Color
Black
