Today IWC is introducing a new platinum version of its perpetual calendar in the Portugieser line. From the look of the photos supplied by IWC, this is a good looking high complication whose white-metal case is a perfect match for its silver-plated dial. This is the first Portugieser in the current collection to pair Kurt Klaus’s perpetual calendar mechanism – which can be set via the crown – and a platinum case. Klaus’s perpetual calendar, originally built on the humble Valjoux 7750, is engineered to track the days, date, and month without being reset until the year 2100, and is widely regarded as one of the milestones of IWC watchmaking. Powering this mechanism today is the in-house IWC 52615 automatic movement with a winding system developed by another IWC legend, Albert Pellaton. The movement has been outfitted with ceramic components that were chosen for long-term durability. It’s not just the calendar function, though, with its numerous displays, including moon phases for both hemispheres, that makes this complex watch stand out. Its power reserve of a full week will come in handy when you take the watch off for an extended period and the calendar doesn’t need to be reset.
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