Audemars Piguet has unveiled its new Royal Oak Perpetual Calendar, powered by Calibre 5134 and only 4.3 mm in thickness. The grand complication, one of the most sophisticated watch machinations, automatically accounts for the amount of days in a month and displays the date accurately even in leap years.
If the watch is wound consistently, the date won't need to be manually adjusted until 2100, a magnificent feat of watchmaking.
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