IWC Portofino IW359001 41 mm Silver Dial

IW359001 lends the Portofino collection a more elaborate calendar presence while retaining its polished, balanced manner. The 41 mm stainless-steel case frames a silver dial with a moon-phase display, and the blue calfskin strap brings a considered note of colour. A see-through back adds visual depth, allowing the watch's decorative movement to participate in the overall design rather than remaining hidden.

Calibre 32150 is an automatic movement with a complete-calendar module and moon-phase function. It contains 223 components and 21 jewels, operates at 4 Hz, and offers 72 hours of power reserve. Its 25.6 mm architecture is finished with an openworked rotor visible through the sapphire back. The calendar information includes day, date and month indications, making the moon phase part of a broader, useful display.