This Omega Speedmaster reference 3815.73.31 features a 'reduced' case that houses the self-winding caliber 3220 movement. Its blue mother-of-pearl dial has Arabic numerals, and it comes on an alligator strap.
Movement Type
Automatic Chronograph
Caliber
3220Jewels
47
Reserve
42
Frequency
28800
Hands
Small Seconds
Shape
Round
Lug Distance
18.00 mm
Material
Stainless Steel
Glass
Sapphire
Diameter
39.00 mm
Water Resistance
100.00 m
Dial Color
Blue
Material
Blue MOP
