MOVEMENT
EL PRIMERO 21 CALIBRE 9004
CALIBRE: 14¼ ```
DIAMETER: 32.80 MM
THICKNESS: 7.9 MM
NUMBER OF JEWELS: 53
NUMBER OF COMPONENTS: 301
2 BARRELS
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Watch power reserve: 50 hours
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Frequency: 36,000 vibrations/hour (5 Hz)
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Unidirectional automatic winding
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Chronograph power reserve: approximately 50 minutes
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Frequency: 360,000 vibrations/hour (50 Hz)
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Manual winding
CHAR AC TERISTICS
3 4
Summary of Contents for EL PRIMERO series
Page 1: ...OPER ATING INSTRUC TIONS...
Page 4: ...ZENITH THE FUTURE OF SWISS WATCHMAKING SINCE 1865...
Page 10: ...EL PRIMERO...
Page 23: ...ELITE...
Page 31: ...EL PRIMERO 21...
Page 43: ...ZENITH OSCILL ATOR CALIBRE 9100...
Page 49: ...HAUTE HORLOGERIE...
Page 67: ...COMPLICATIONS...
Page 68: ...EL PRIMERO...
Page 81: ...ELITE...