Until now, the majority of luxury watches with moonphase indications were accurate to the year 2100 before needing an adjustment to compensate for the leap year that should happen but won’t (so that the Gregorian Calendar and real solar time align). Now, however, IWC shatters that standard with its Portugieser Eternal Calendar — with moonphase accuracy for a whopping 45 million years. Years in the making, the Eternal Calendar boasts a revolutionary gear system mechanically programmed for 400 years, including three skipped leap years over that time. The calendar can calculate leap years correctly until 3999. The watch features a Double Moon display at 12 o’clock on the dial showcasing the moon from both the Northern and Southern hemispheres. The automatic movement also displays the date, day, month, year and a small hacking second hand. The 44.4mm case is crafted in platinum. Production is limited due to the production time and involvement.
Details
| Company | IWC Schaffhausen |
| Price ($) | 155,000 |
| Awards | Top New Watches |
| Price range | $100,000 - $200,000 |
| Carrats | 18K |
| Gender | Unspecified |
| Case | Round |
| Complications | Hours Minutes Small Seconds Moon Phase Power Reserve Indicator Date Month Indicator Day/Week Indicator Additional features |
| Water Resistance | 50m |
| Movement | Automatic |
| Power Reserve Range (hours) | > 97 |
| Power Reserve | 168 hours |
| Case Size | Large (>39mm) |
| Case Diameter (mm) | 44 |
| Case Height (mm) | 15 |
| Case Back | Transparent |
| Case Colour | Platinum |
| Case Material | Platinum |
| Dial Colour | White |
| Dial Material | Glass |
| Caliber | 52640 |
| Where to buy | Available by appointment |
| Reference Number | IW505701 |
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The American dream is made reality through IWC Schaffhausen watches. Deeply rooted in American pioneering spirit and entrepreneurship, the brand combines this with Swiss engineering and ingenuity to create timepieces that challenge definitions of delusion. The unbound nature of the brand is reflected in its collections, which pay tribute to those who roam all corners of the world.From its Pilot's Watches collection that feature resistance to temperature fluctuations, patented SPRIN-g Protect systems and ergonomic case structures, we are invited to reflect on the transcendence of time. Similarly, engineered for navigators, the Portugieser collection incorporates classical technologies of haute horlogerie, including a double moon phase display and a developed tide indicator. The Portofino line also parades the moon phase mechanism with classy design, including an embossed silver plates dial and diamond embellishment to its watches.
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