IWC, IWC Portuguese series, model: IW500705, automatic winding, stainless steel, case diameter: 42.3MM Classic appearance: 42.3mm stainless steel case with silver-white silver-plated dial, blue Arabic numeral hour markers and hands, date window at 6 o 'clock, small seconds sub-dial at 9 o 'clock, and 7-day power reserve display at 3 o 'clock, which is the signature "three-eye" layout of the Portuguese series. Super power: Equipped with IWC's self-produced automatic winding movement, it has an ultra-long power reserve of 7 days, which is also the origin of the nickname "Portuguese Seven", significantly reducing the frequency of winding. Elegant texture: Paired with a deep blue alligator leather strap and a double-sided anti-reflective convex sapphire crystal, it caters to both business and casual occasions, making it a popular choice for dress watches.