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it features a 41mm platinum case
Though the brand fell dormant for some years
and an Italian month indicator at 12 o’clock
sapphire crystal and the manufacture's Calibre 6R35
and some of the coolest innovations in dive watch technology date to this era
Patek Philippe Retrograde Perpetual Calendar World Timer it features a 41mm platinumA perpetual calendar is like a small computer on your wrist. Think of it this way: Imagine a watch that keeps track of not only the time, but also the date, the day of the week, and the month, and also tells you whether its a leap year or not, and what the current phase of the moon is. Oh, and one more thing imagine it does all of this mechanically, using springs and gears, and that you only have to adjust it once every century or so. Crazy, right?
