The IWC Portofino Hand-Wound Moon Phase Ref. IW516409 combines timeless elegance with refined mechanical watchmaking, featuring an 18 ct 5N gold 45 mm case and a silver-plated dial for the first time in this configuration. The watch is paired with a blue alligator leather strap by Santoni and measures 13.1 mm in height, with 3 Bar water resistance. Its arched-edge sapphire crystal features antireflective coating on both sides, while the dial displays the date, moon phase, and power reserve. Small hacking seconds allow precise time setting, and the synthetic sapphire crystal case back provides a view of the movement.

The watch is powered by the IWC-manufactured Calibre 59800, a manual-winding movement operating at 28,800 Vph (4 Hz) with an impressive 192-hour, or eight-day, power reserve. Comprising 232 components and 30 jewels, the movement is finished with Côtes de Genève and Perlage decoration, reflecting IWC’s attention to mechanical craftsmanship. Its eight-day power reserve, moon phase display, and sophisticated 18 ct 5N gold construction give the Ref. IW516409 a distinctive presence within the Portofino collection. The watch is eligible for up to 8 years of warranty through My IWC Care.