Moon Phase Master: IWC Portugieser Sets Guinness World Record™

Moon Phase Master: IWC Portugieser Sets Guinness World Record™

Have you ever dreamed of owning a piece of the moon? Well, IWC Schaffhausen has made that dream a reality with their latest marvel—the Portugieser Eternal Calendar. Hang on, because we are about to take you on a stellar journey through time and space, filled with fun facts, mind-blowing precision, and a Guinness World Record™! (REF IW505701)

The Big Announcement: June 26, 2024

Imagine our excitement when we heard the news: the newly introduced Portugieser Eternal Calendar has officially been crowned the "most precise lunar phase wristwatch" by Guinness World Records™! That’s right, folks—this watch has a theoretical deviation of just one day in 45,361,055 years. Let us repeat that: 45 million years! That's longer than the age of our planet! The previous record was beaten by more than 43 million years. Talk about shooting for the stars!

How Does It Work? The Magic Behind the Precision

So, how did IWC achieve this astronomical feat? It's all thanks to their ingenious engineers and a little something called a reduction gear train with three intermediate wheels. This setup reduces the duration of one calendar month to match the lunar cycle almost perfectly. The moon phase display, often hailed as the most charming complication in watchmaking, ensures you never miss a full moon, even if it's hiding behind the clouds. A marvel for the Portugieser Collection.

The Engineering Marvel: A Deep Dive

The heart of this lunar wizardry lies in the moon phase display, where a reduction gear train works its magic between the base calendar module and the moon phase disc. This gear train fine-tunes the duration of one calendar month to match the synodic month (29 days, 12 hours, 44 minutes, and 2.88 seconds). The precision of this display depends on the number of wheels, their proportions, and the number of teeth they have.

IWC's engineers went all out, defining key parameters like the minimum and maximum number of teeth per wheel. They even ran a computer simulation that crunched through almost 23 trillion combinations! Yes, you read that right—trillion! Through an iterative process, they found the perfect combination, ensuring the display deviates by just one day every 45 million years.

Cutting-Edge Manufacturing: The LIGA Process

But the story doesn’t end there. Achieving such high accuracy required minimizing backlash between the wheels, which meant optimizing tooth geometry. Traditional metal machining wouldn’t cut it, so IWC turned to the LIGA process—lithography, electroplating, and molding. This high-tech method, often used in the semiconductor industry, allowed for the production of tiny, precise components with unparalleled accuracy.

A Legacy of Excellence: IWC Schaffhausen

Let’s take a moment to appreciate IWC Schaffhausen, the mastermind behind this horological wonder. Founded in 1868 by American watchmaker Florentine Ariosto Jones, IWC blends human craftsmanship with cutting-edge technology. Over its 150-year history, IWC has earned a reputation for creating robust, functional complications—especially chronographs and calendars—that are a breeze for customers to use.

IWC is also a pioneer in sustainable luxury watchmaking, responsibly sourcing materials and minimizing environmental impact. Their dedication to transparency, circularity, and responsibility ensures that every timepiece is built to last for generations. Plus, they partner with global organizations to support children and young people.

Join the Lunar Legacy

So, our fellow watch lovers, if you’re ready to elevate your style and embrace a legacy of innovation and sophistication, look no further than the IWC Portugieser Eternal Calendar. It’s not just a watch; it’s a piece of the cosmos on your wrist, officially recognized by Guinness World Records™. 

Keep reaching for the stars, and may your time always be precise and stylish!