The Historical legacy in the Moonwatch features a Hesalite crystal and an aluminum bezel with tachymeter scale. Using the creation of the first metal 5164A in 2011, Patek integrated their Calibre 324 S C FUS, an automated four Hz motion using a 45-hour power reserve that gives a clever twin-time https://www.watchesworld.com/germanys-top-10-favourite-luxury-watches/