The Arabic Numerals are surrounded by a minute scale plus a ¼-2nd scale around the flange that allows specific readings to the central chronograph seconds hand. IWC’s manufacture Caliber 69355 beats In the stainless-steel case, its built-in chronograph capabilities controlled by a column wheel and Outfitted with a flyback purpose. https://www.jowissa.com/fr-ch/products/aura-schweizer-damenuhr-j5-647-m