IWC Portofino, model: IW458103, automatic mechanical, stainless steel, case diameter: 37mm. Dial design The silver-gray radiating dial features a gradient sun pattern at the center, with fine layers Rose gold three-dimensional hour markers, Roman numerals at 12 / 6 o 'clock, with rose gold hour and minute hands ◦ Single-window date display at 3 o 'clock (Date 14 is shown in the picture) The dial is marked with "AUTOMATIC", representing an automatic mechanical movement The strap: A brown short-snout fishskin strap with clear texture, paired with a stainless steel pin buckle, is retro and gentle, suitable for various scenarios such as commuting and dates. Equipped with IWC's self-produced Cal.35111 automatic winding movement and 31 gemstone bearings • Vibration frequency 28,800 times per hour, power reserve 42 hours The transparent back cover allows you to admire the fine polishing techniques such as Geneva waves and blue steel screws, ensuring stable timekeeping and simple daily maintenance