IWC has integrated a moon phase display into a Portofino Hand-Wound Eight Days watch for the first time with the Portofino Hand-Wound Moon Phase (Ref. 5164). The watch is also a tribute to the Reference 5251 from 1984, another timepiece that was equipped with this complication.
Model: Portofino Hand-Wound Moon Phase Ref. IW516401 • IW516403
Power reserve display
Moon phase display
Small hacking seconds
IWC-manufactured calibre 59800 Mechanical movement
Frequency: 28,800 A/h | 4 Hz
Power reserve: 8 days (192 h)
Case, dial and strap
Ref. IW516401: Stainless-steel case, silver-plated dial, gold-plated hands and appliqués, dark brown alligator leather strap by Santoni
Ref. IW516403: 18-carat red gold case, slate-coloured dial, goldplated hands, solid gold appliqués, dark brown alligator leather strap by Santoni
Glass Sapphire, arched edge, antireflective coating on both sides
See-through sapphire-glass back
Water-resistant: 3 bar
Diameter: 45 mm
Height: 13.5 mm
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