The 5-row Bracelet, where the components are screwed with each other and become noticeably narrower toward the clasp, is completely brushed within our Hesalite crystal Model. With all the development of the original steel 5164A in 2011, Patek incorporated their Calibre 324 S C FUS, an automated 4 Hz movement https://www.watchesworld.com/germanys-top-10-favourite-luxury-watches/