45 milion years moon phase accuracy: Meet the IWC Portugieser Eternal Calendar (Ref. IW505701)

🔗 https://watches.iwc.com/efa3f1 Engineered to track the movement of the earth’s most steadfast companion. 29 days, 12 hours, 44 minutes, and 2.88 seconds, that’s how long it takes for the moon to travel around our planet. Translating it into the right formula for the Portugieser Eternal Calendar (Ref. IW505701) required creativity, and the utmost precision. 📷 Ref. IW505701 Discover our collection here: App: https://apps.apple.com/us/app/iwc-schaffhausen-app/id1558418880 Journal: https://www.iwc.com/en/articles/journal Facebook: https://www.facebook.com/iwcwatches Instagram: https://www.instagram.com/iwcwatches LinkedIn: https://www.linkedin.com/company/iwc-schaffhausen TikTok: https://www.tiktok.com/@iwcwatches Pinterest: https://www.pinterest.de/iwcwatches/ Twitter: https://www.twitter.com/iwc #IWCwatches | #IWCportugieser | #IWCeternalcalendar |#ProudlyMadeInSchaffhausen