The Arabic numerals are surrounded by a moment scale plus a ¼-2nd scale within the flange that enables exact readings over the central chronograph seconds hand. IWC’s manufacture Caliber 69355 beats inside the stainless-steel case, its integrated chronograph capabilities managed by a column wheel and equipped with a flyback purpose. https://www.jowissa.com/it-ch/blogs/blog/be-on-time-and-on-trend-with-jewelry-watches