IWC Portofino series, model: IW510103, manual winding, stainless steel, case diameter: 45.0mm, case: Polished stainless steel round case, upright lugs with smooth lines, paired with double-sided anti-reflective arched edge sapphire crystal and transparent sapphire caseback. • Dial: Silver-plated white dial, rose gold Roman numeral hour markers and hands, red 60-degree mark at 12 o 'clock, 8-day power reserve display window at 9 o 'clock, small seconds sub-dial at 6 o 'clock, and date window at 3 o 'clock. The layout is balanced and symmetrical, with high recognition