IWC: Portugieser Perpetual Calendar Collection 2020

Back in the 1980s, IWC’s legendary watchmaker Kurt Klaus designed a perpetual calendar that comprised only about 80 individual parts. The complication premiered in the Da Vinci Perpetual Calendar (Ref. 3750) of 1985. For the first time, a perpetual calendar had a four-digit year display and a perpetual moon-phase display.

Today, the Brand of Schaffhausen presents the Portugieser Perpetual Calendar 42. For the first time, the famous IWC calendar complication is integrated in an IWC-manufactured movement from the 82000 calibre family. 

The IWC-manufactured 82650 calibre advances the calendar module with a single impulse during the night. The automatic Pellaton winding is equipped with zirconium oxide ceramic components and builds up a power reserve of 60 hours. The movement can be admired through the transparent sapphire glass back. 

The perpetual calendar’s mechanical programme independently recognises the different lengths of the months and adds an extra day at the end of February every four years. All the displays are perfectly synchronised with each other and can be adjusted simply via the crown. In this version of the calendar, the displays for the date, month and day of the week are distributed over three subdials at 3 o’clock, 6 o’clock and 9 o’clock. The perpetual moon phase display was integrated into the month display and deviates from the actual orbit of the moon by only one day after 577.5 years. An indicator in the weekday display counts the years until the next leap year. 

Two models are housed in an 18 carat 5N gold case. The third one features a stainless steel case. 

Ref. IW344203 Steel 42 mm

Stainless steel case, silver-plated dial, gold-plated hands and appliques, black alligator leather strap by Santoni. (€ 22.700)

Ref. IW344202 Red Gold 42 mm

18-carat 5N gold case, silver-plated dial, gold-plated hands, 18-carat gold appliques, brown alligator leather strap by Santoni. (€ 32.800)

Ref. IW344205 Red Gold 42 mm Boutique Edition

18-carat 5N gold case, blue dial, gold-plated hands, 18-carat gold appliques, blue braided calf leather strap. (€ 32.800)

BOUTIQUE EDITION Ref. IW503312 Armor Gold 44 mm

The classic Portugieser Perpetual Calendar (Ref. 5033) with a 44-millimetre diameter displays the calendar information on four subdials. In addition to the displays for the date, day, month and moon phase, it features a four-digit year display, small seconds and a power reserve display. Newly available is a Boutique Edition with maritime-inspired design cues, an 18-carat Armor Gold case, gold-plated hands, 18-carat gold appliques, blue dial and a blue braided calf leather strap. (€ 38.200)

The timepiece is powered by the IWC-manufactured 52610 calibre, which features a bidirectional Pellaton winding system fitted with components made of virtually wear-free zirconium oxide ceramic. Two barrels build up a power reserve of seven days.