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The Portofino Automatic Moon Phase is the first Portofino timepiece with a case diameter of 40 millimetres that features a moon phase display.
ABOUT THE WATCH
Portofino Automatic Moon Phase
In 1984, IWC created the Portofino collection. The family was named after the idyllic village on the Italian coast, which became an exclusive holiday destination for the international jet-set during the 1950s and 1960s. Since that day, Portofino watches have successfully combined the ease of the Mediterranean lifestyle with a touch of glamour and elegance. The Portofino Automatic Moon Phase is the first Portofino timepiece with a case diameter of 40 millimetres that also features a moon phase display. Until now, this popular complication was only offered in 45 millimetres or 37 millimetres. This timepiece is housed in a classic stainless steel case. The golden moon set against the blue night sky creates a beautiful contrast to the silver-plated dial, as well as the gold-plated hands and appliqués. This casual yet elegant watch is fitted with a hand-painted brown alligator leather strap.
Moon phase display | IWC Schaffhausen
The difficulty in displaying the moon phase on the dial of a watch comes from the fact that the moon does not follow a daily rhythm in its orbit around the Earth. A cycle from new moon to new moon – one lunation – does not last 30 days, but exactly 29 days, 12 hours, 44 minutes, and 2.88 seconds. Therefore, a period of 30 days must be slowed down to come as close as possible to one lunar cycle. This is achieved by placing a reduction gear between the day star and the moon phase disc. The key to high precision lies in the number of wheels used, their proportions and the number of teeth they have. IWC’s moon phase displays are calculated to the highest precision and accuracy.
Features
Case
Movement
Packaging
Central hacking seconds
Sapphire glass, convex, antireflective coating on both sides
