The Portugieser Perpetual Calendar 44 features a polished 18-carat white-gold case measuring 44.4 mm, paired with a Horizon Blue dial created through an intricate 60-step process involving fifteen layers of transparent lacquer that are finely ground and polished to achieve a deep, glossy finish. Rhodium-plated hands and appliques provide refined contrast against the dial. The watch is powered by the IWC-manufactured 52616 perpetual-calendar caliber with automatic winding via the Pellaton system and offers a 7-day power reserve. The perpetual calendar automatically adjusts for varying month lengths and leap years, complemented by the IWC Double Moon display that shows the moon phase for both hemispheres. Completing the design is a blue calfskin strap crafted by Santoni, secured with an 18-carat white-gold folding clasp, delivering elegance, precision, and unmistakable Portugieser character.