Portofino Hand-Wound Eight Days Moonphase Red Gold / Silver

In Context

At 45 mm it is a large watch — well above this catalogue’s 40 mm median, and enough to dominate a narrow wrist. At 12 mm it is a tall case, and it will catch on a cuff. The case back is open, so the movement is visible without taking the watch apart, and the sapphire crystal will resist everything short of deliberate abuse. Rated to 30 m, it is protected against rain and splashes and nothing beyond that.

The movement is hand-wound, so winding it becomes part of the day rather than something the watch does for you. 192 hours of reserve puts it well past a weekend — several days off the wrist and it is still going. At 28,800 vph the seconds hand advances 8 times a second.

IW5164-09 is one of 6 executions of the IW5164 base reference. Underneath they are the same watch; what separates this one is a silver dial and a red gold case. Introduced in 2017. Beyond the time it carries a moon phase.

Handwound movement with small seconds, date, power reserve, and moonphase indicator.

6 other watches in the library run the IWC 59800.

IWC

Portofino Hand-Wound Eight Days Moonphase Platinum / Laureus Charity Night Milano 2018

IW516408 · 45 mm

IWC

Portofino Hand-Wound Eight Days Moonphase 150 Years Stainless Steel / White

IW5164-06 · 45 mm

IWC

Portofino Hand-Wound Eight Days Moonphase "150 Years" Stainless Steel / Blue

IW5164-05 · 45 mm

IWC

Portofino Hand-Wound Eight Days Moonphase 150 Years Red Gold / Blue

IW5164-07 · 45 mm