Ref. 3570.50.00 is the Speedmaster Professional with stainless steel case and bracelet, arguably the most traditional 'Moonwatch' configuration. It has a hesalite crystal and stainless steel caseback, and was succeeded by the 'Big Box' Speedmaster in 2014.
Movement Type
Manual Chronograph
Caliber
1861Jewels
18
Reserve
48
Frequency
21600
Hands
Small Seconds
Shape
Round
Lug Distance
20.00 mm
Material
Stainless Steel
Glass
Plexi
Thickness
14.16 mm
Diameter
42.00 mm
Water Resistance
50.00 m
Dial Color
Black
