The Arabic numerals are surrounded by a moment scale plus a ¼-2nd scale around the flange that allows precise readings about the central chronograph seconds hand. IWC’s manufacture Caliber 69355 beats inside the stainless-steel case, its integrated chronograph features controlled by a column wheel and equipped using a flyback function. https://www.jowissa.com/fr-ch/products/leder-uhrarmband-glaenzend-kroko-e3-1480-m