A high-complication luxury timepiece from IWC Schaffhausen: the Portugieser Perpetual Calendar with Moon Phase. Features a classic white dial with applied Arabic numerals, blued steel hands, and four subdials—day of week, date with leap-year indicator, month with year display, and a vivid blue moon phase aperture with starry sky motif. The 44.2mm stainless steel case houses the in-house Caliber 52610 automatic movement with 7-day power reserve. Paired with a black alligator leather strap with crocodile texture and polished deployant clasp. The design balances technical sophistication with elegant readability, embodying Swiss horological tradition. Ideal for formal events, business settings, or discerning collectors who appreciate mechanical artistry. Water resistance to 30m makes it suitable for daily wear (avoid swimming/showering). The perpetual calendar requires no adjustment until the year 2100, while the moon phase needs correction only after ~122 years. Crafted in Schaffhausen, Switzerland, with meticulous finishing including sunburst dial, polished bezel, and sapphire crystal with anti-reflective coating.