IWC watches from the Portofino Chronograph collection. The IWC Portofino Chronograph 42mm IW391020 Premium Quality Sports Men’s Watch is equipped with a reliable automatic self-winding mechanism (powered by arm movement amplitude) of Valjoux-7750 caliber, in which the following features: hour, minute and second hands, as well as date, day of the week, chronograph. The round case of the watch in pink, with a size of 42 mm and a height of 13.6 mm, will perfectly complement the image and decorate the wrist of its wearer. For manufacturing watches IWC Portofino Chronograph 42mm IW391020 offered in our online store, use high quality stainless steel 316F (Swiss standard), as well as sapphire glass of high strength, thus providing maximum protection against chipping and mechanical damage. The distinctive feature of this model is a white dial, the hour indices of which provide Roman numerals. Completes the look with a brown leather strap with IWC’s signature folding clasp. The waterproofness of this model is 30M (WR30)- minimal exposure with water is allowed.