Rolex 4030

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Rolex 4030 is a calibre by Rolex.

This self-winding chronograph movement bases on the calibre El Primero by Zenith (Calibre Zenith 400) and has been modified by Rolex.

The fast-oscillating Zenith calibre has been clocked down from 36,000 A/h to 28,800 A/h and has been provided with a Breguet hairspring and with microstella screws.

It was used in the model Rolex Oyster Perpetual Cosmograph Daytona till 2000. Afterwards it was replaced by the Rolex-own development Rolex 4130.




Self-winding movement, bi-directional winding
Breguet hairspring
Chronometer certificate (COSC)
Escapement: Stone lever
Yoke winding system
Glucydur balance wheel with microstella screws
Kif shock protection for balance wheel and escape wheel


Small seconds


13¾ lignes
D 31.0 mm, H 6.55 mm
31 jewels
28,800 A/h
Power reserve 50h

Production period: