Black alligator leather strap by Santoni
Strap width
22.0 mm
Portugieser Perpetual Calendar 42
With the Portugieser Perpetual Calendar 42, IWC integrated this popular complication into an in-house movement from the 82000-calibre family.
ABOUT THE WATCH
Portugieser Perpetual Calendar 42
IWC’s perpetual calendar, developed by Kurt Klaus in the 1980s, automatically recognizes the different lengths of the months and the leap years and can easily be adjusted via a single crown. Now, for the first time, the complication is integrated into a movement from the 82000-calibre family. The Portugieser Perpetual Calendar 42 displays the date, month and weekday on three subdials at "3 o'clock", "6 o'clock" and "9 o'clock". It also features indications for the moon phase and the leap year. With the help of ceramic components, the IWC-manufactured 82650 calibre’s Pellaton winding system builds up a power reserve of 60 hours. This timepiece with a diameter of 42 millimetres has a stainless steel case, a silver-plated dial, and gold-plated hands and appliqués. This timeless, elegant Portugieser is fitted with a black alligator leather strap from Santoni.
Perpetual calendar | IWC Schaffhausen
In the early 1980s, IWC’s head-watchmaker Kurt Klaus set out on an engineering journey to translate the Gregorian calendar with its many irregularities into a mechanical program for a wristwatch. His ingenious perpetual calendar, which debuted in the Da Vinci Perpetual Calendar in 1985, comprises only about 80 parts and displays the date, day, month, year in four digits, and the moon phase. The smart mechanical program automatically recognises the different length of the months, and even adds a leap day at the end of February every four years. The moon phase display is so precise that it will deviate from the actual phase of the moon by just one day after 577.5 years. All displays are perfectly synchronised and can be adjusted simply by turning the crown. Some models come with an additional century slide, so the watch can continue showing the date until 2499. The calendar only needs a small adjustment in those centurial years that skip the leap year, which is the case in 2100, 2200, and 2300. Some versions of the calendar feature a double moon phase display, showing the moon phase on the northern and southern hemispheres.
Features
Case
Movement
Packaging
Central hacking seconds
Pellaton automatic winding
Sapphire glass, convex, antireflective coating on both sides
Perpetual calendar with displays for the date, day, month, leap year and perpetual moon phase
Case
Stainless steel
Case
Diameter
42.4
mm
Height
13.8
mm
Back case
See-through sapphire glass back
Water resistance
3.0
bar
Calibre
82650
Calibre
Movement type
Automatic winding,
IWC-manufactured movement
