The Omega Speedmaster is an icon unlike any other. Reference 3695.50.31 has a yellow gold case and a solid caseback hiding caliber 1863, and is fitted with a sapphire glass and an alligator strap.
Movement Type
Manual Chronograph
Caliber
1863Jewels
18
Reserve
48
Frequency
21600
Hands
Small Seconds
Shape
Round
Lug Distance
20.00 mm
Material
Yellow Gold
Glass
Sapphire
Diameter
42.00 mm
Water Resistance
50.00 m
Dial Color
Black