Launched in 1975, ref. ST 176.0012 is nicknamed 'Mark 4.5' because it combines the Mark IV's case with the Mark V's movement.
Movement Type
Automatic Chronograph
Caliber
1045Jewels
17
Reserve
48
Frequency
28800
Hands
Small Seconds
Shape
Cushion
Material
Stainless Steel
Glass
Mineral
Diameter
41.00 mm
Water Resistance
60.00 m
Dial Color
Black
