IWC Unveils Portofino Perpetual Calendar With Moonphase That’s Accurate For 577.5 Years

I’ve been in the watch industry a very long time. In fact, I started my journey in late 1984 and my first full year in timepieces was in 1985. That was the same year that IWC unveiled its revolutionary DaVinci Perpetual Calendar watch that had been developed over the course of several years by master watchmaker Kurt Klaus – a man considered a legend for the brand today. The perpetual calendar displays the date, day of week, month, moonphase and year in four digits – and runs without needing a correction until the year 2499.

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