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- Size 45
With their imposing case size of 45 millimeters and their large hand-wound movements featuring an 8-day power reserve, these models pay tribute to the origins of the Portofino. Hand-wound Portofino watches are presented with or without a moon phase display.
59000 calibre family
The IWC-manufactured 59000 calibre family encompasses large hand-wound movements with a power reserve of 8 days. When this period expires, the movement is automatically stopped. An additional day of power is stored as a reserve in the mainspring, ensuring a constant torque and precise rate to the end. The balance with a Breguet spring oscillates at a frequency of 4 hertz (28’800 vibrations per hour).
Product information
IWC Portofino
Created in 1984 by converting a Lépine moon phase pocket watch into a large round wristwatch, the Portofino is a versatile dress watch that harmoniously blends refined simplicity with understated elegance.
