The Portofino Hand-Wound Moon Phase in 18-carat 5N gold pays homage to the first Portofino from 1984, which also had a moon phase display. It is powered by the hand-wound 59800-calibre movement, which has a power reserve of 8 days when fully wound. The slate-coloured dial with moon phase display, date, small seconds and power reserve display is simple and balanced. The see-through sapphire-glass back provides a view of the 8-day movement and the various decorations on the plates and bridges. The dark brown strap is made from alligator leather by the Italian company Santoni. IWC’s moon phase displays are not just aesthetic works of art – they are extremely precise and diverge from the actual phase of the moon by just 1 day in 577.5 years.
18 ct 5N gold case,
IWC-manufactured movement Manual-winding
8 days power reserve, Power reserve display
Sapphire glass, arched-edge, antireflective coating on both sides
Dark brown alligator leather strap by Santoni