English; Technical Specifications, Functions, Caption, Handling Operations - Pierre DeRoche PDR 4020 Mode D'emploi

English

Movement technical specifications
• Movement: Dubois Dépraz, calibre 335
• Diameter: 26.18 mm
• Thickness: 7.18 mm
• Frequency: 4 Hz (28,800 vibrations/hour)
• Jewelling: 21 jewels
• Power reserve: 42 hours
• Oscillating weight: brass base mounted on ball-bearing
mechanism. Heavy metal peripheral segment
Movement functions
Calibre PDR 4020 drives the following functions and specific features:
• Hours, adjustable in successive hourly increments
• Minutes
• Seconds by means of a circular dot in the dial centre
• Date
• Pointer-type 24-hour dual-time (GMT) display
• Power-reserve indicator
Moreover, this movement is also equipped with a "raised winding-
stem" mechanism serving to ensure optimal positioning of the
winding crown, which thereby facilitates handling and enhances
wearer comfort.
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