This classic Speedmaster has a 40mm case and an automatic chronograph with full calendar, powered by the Valjoux 7751-derived caliber 3606. Ref. 323.53.40.44.01.001 is in red gold with a black dial.
Movement Type
Automatic Chronograph
Caliber
3606Jewels
25
Reserve
42
Frequency
28800
Hands
Small Seconds
Shape
Round
Lug Distance
19.00 mm
Material
Red Gold
Glass
Sapphire
Diameter
40.00 mm
Water Resistance
100.00 m
Dial Color
Black