Family: El Primero31 jewels50h power reserve36,000 vph (5 Hz)
Second-gen El Primero. Updated 3019 PHC with better shock protection, 36,000 vph. Chronomaster. Evolved to 400Z.
Last updated 26 Oct 2026Suggest a correction
TECHNICAL SPECIFICATIONS
Movement Type
Automatic
Jewel Count
31 jewels
Power Reserve
50h
Frequency
36,000 vph (5 Hz)
Diameter
30mm
Display Type
Analog
FEATURES
Small Seconds
QUICK FACTS
BRAND
TYPE
AutomaticSTATUS
DiscontinuedMANUFACTURE
In-houseLAUNCH YEAR
1987CALIBER FAMILY
El PrimeroALSO KNOWN AS
cal. 400el primero classic heir
FOR WATCH DEALERS
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Chronomaster Revival El Primero A384
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03.A780.400-2/91.M3642
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03.A780.400-3/56.M3642
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Defy Chronograph USM
03.A780.400/19.M3642
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Chronomaster Revival Liberty II
03.US384-2.400/69.M384
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Chronomaster Revival Liberty II
10.US384.400/69.C823
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Chronomaster Revival Safari
97.T384.400/57.M384
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