Family: 40xx28,800 vph (4 Hz)
Caliber 4030 is an automatic chronograph movement manufactured by Rolex. It is a heavily modified version of the Zenith El Primero, incorporating approximately 200 changes from the original design. The frequency was reduced from 36,000 to 28,800 vph, and the movement powered the Daytona reference 16520. Production began in 1989 and discontinued in the early 2000s as Rolex transitioned to its in-house chronograph calibers.
TECHNICAL SPECIFICATIONS
Movement Type
Automatic
Frequency
28,800 vph (4 Hz)
Display Type
Analog
COMPLICATIONS
Chronograph
More Rolex movements
QUICK FACTS
BRAND
TYPE
AutomaticSTATUS
DiscontinuedMANUFACTURE
ÉbaucheLAUNCH YEAR
1989CALIBER FAMILY
40xxALSO KNOWN AS
cal. 4030modified zenith el primero
FOR WATCH DEALERS
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