The IWC Portugieser Perpetual Calendar 42 Ref. IW344205 combines the timeless elegance of the Portugieser collection with one of IWC’s most celebrated complications. Its 42.4 mm case is crafted from 18-carat 5N gold and paired with a rich blue dial and a blue alligator leather strap by Santoni. The dial features a perpetual calendar displaying the date, day, month, leap year and perpetual moon phase, while convex sapphire glass with antireflective coating on both sides protects the display. Central hacking seconds and IWC’s Pellaton automatic winding system further enhance its practical and mechanical sophistication.

At the heart of the watch is IWC-manufactured Calibre 82650, an automatic, self-winding movement from the 82000-calibre family. Operating at 28,800 vibrations per hour (4 Hz), it comprises 303 components and 46 jewels and delivers a 60-hour power reserve. The movement is beautifully finished with Côtes de Genève and Perlage and can be admired through the synthetic sapphire crystal case back. Measuring 42.4 mm in diameter and 13.8 mm in height, the 18-carat 5N gold case offers 3 bar of water resistance. With its precious-metal construction, sophisticated perpetual calendar and refined blue-and-gold aesthetic, the IW344205 is an exceptional expression of IWC’s high-end mechanical watchmaking.