As an enduring classic, the Speedmaster now has a 40mm case and a full-calendar automatic chronograph movement (caliber 1164 based on Valjoux 7750). Ref. 323.53.40.40.02.001 combines a yellow gold case with alligator strap and a silver dial.
Movement Type
Automatic Chronograph
Caliber
1164Jewels
25
Reserve
42
Frequency
28800
Hands
Small Seconds
Shape
Round
Lug Distance
19.00 mm
Material
Yellow Gold
Glass
Sapphire
Diameter
40.00 mm
Water Resistance
100.00 m
Dial Color
Silver
