Iwc Portuguese Perpetual Calendar 44.2 Mm Ref. Iw503401

The moon phase display of the Portugieser Perpetual Calendar deviates from the actual length of the lunation by only one day every 577.5 years. In the perpetual calendar with double moon display, the representation of the different lunar cycles is done in a mirror-image manner for the northern and southern hemispheres. The Double Moon model sports “chemin de fer” type hardware, typical of the Portugieser family. In addition, IWC’s designers realized the entire moon phase display as a star-studded night sky in which the moon and stars seem to float in an endless space. The elegant timepiece fulfills every wish: perpetual calendar, four-digit year display, seven-day power reserve with Pellaton winding system and power reserve display. The IWC 52000 caliber family manufacture movement features solid red gold rotors and blued screws. Made of 18K white gold with a blue dial, the watch features a glass with accentuated doming and a black alligator leather strap.