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As the leap day of February 29 approaches, we are looking at the crucial developments in perpetual calendars over the past two decades.   Improvements in the complication have traditionally been centered on readability and setting, while still relying on the “grand lever” mechanism, a traditional approach with notable issues in terms of useability, making perpetual calendars like the MB&F LM QP truly ingenious. Read our in-depth feature on SJX Watches. #sjxwatches #knowledge

Insight: Perfecting the Perpetual from Quartz Crisis till Today

Insight: Perfecting the Perpetual from Quartz Crisis till Today

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