Portugieser Perpetual Calendar

IWC’s perpetual calendar, developed by Kurt Klaus in the 1980s, automatically recognizes the different lengths of the months and the leap years. It can be easily adjusted using the crown. The mechanical program will not require any manual correction until 2100. The Portugieser Perpetual Calendar displays the calendar information on four sub-dials. In addition to the displays for the date, the weekday, the month and the moon phase, it features a four-digit year indication and a power reserve display. This special edition is characterized by a maritime design and is available exclusively at IWC boutiques and online at iwc.com. It features an 18-carat Armor Gold® case, a blue dial, gold-plated hands and 18-carat gold appliqués. The IWC-manufactured 52610 calibre’s Pellaton winding system is fitted with ceramic components and builds up a power reserve of 7 days in two barrels. The decorated movement and the rotor in 18-carat gold are visible through the sapphire glass case back.