The perpetual calendar of IWC, created by Kurt Klaus in the 1980s, automatically recognizes the various durations of the months and leap years and is easily adjusted with a single crown. Today, for the first time, the complication is integrated into a movement of the 82000 caliber family. The Portugieser Perpetual Calendar 42 shows the date, month and day of the week in three counters at "3 o'clock", "6 o'clock" and "9 o'clock". It also presents indications of the moon phases and the leap year. With the help of ceramic components, the Pellaton refill system of the IWC-manufactured 82650 caliber allows you to accumulate a 60-hour power reserve. This special edition of 42 mm in nautical style is available exclusively in IWC boutiques and online on iwc.com. It features an 18-carat red gold case, a blue dial, golden hands and applied indexes in 18-carat gold. Elegant and timeless, the Portugieser model is accompanied by a blue alligator leather strap.