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IWC Portuguese Perpetual Calendar II

Posted by wristwatch on July 7, 2007

The Portuguese Perpetual Calendar has just about everything you could possibly wish for: a perpetual calendar, a perpetual moon phase display, a window showing the year in four digits, a seven-day automatic movement with Pellaton winding system and a power reserve display. The view of the lunar phases is reminiscent of classical representations of the moon, whose waxing and waning is due to the presence of two semi-circles. This is the method chosen by watchmakers over the centuries to depict the “celestial arena” in gold. In view of the extra space available in the large movement, the moon phase wheels in the IWC perpetual calendar now have more teeth, making the mechanism one of the most accurate available. After 577.5 years, it will deviate by just one day from the moon’s actual progress. It is a modern and elegant timepiece that can hardly be bettered. The case is two millimetres less in diameter than that of its predecessor, a small modification that makes a visible difference on the wearer’s wrist.

* Calibre: 51610
* Vibrations: 21 600/h / 3 Hz
* Jewels: 64
* Power reserve: 7 days (168 hours)
* Winding: automatic
* Limited edition of 250 watches in platinum
* Mechanical movement
* Automatic Pellaton winding system
* Seven-day power reserve
* Power reserve display
* Perpetual calendar with displays for the day, date, month, year in four digits and perpetual moon phase
* Off-centre small seconds hand with stop function
* Breguet spring
* Convex sapphire glass
* Sapphire glass back
* Water-resistant 30 m
* Glass: sapphire, convex, antireflective
* Back: sapphire glass back
* Water-resistant: 3 bar (30 m)
* Case diameter: 42.3 mm
* Case height: 15.6 mm
* Weight: 147g

Reference IW502213 The Portuguese Perpetual Calendar in 18 ct. rose gold with brown crocodile leather strap
Reference IW502218 The Portuguese Perpetual Calendar in 18 ct. white gold with dark brown crocodile leather strap



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