Portofino Hand-Wound Monopusher White Gold / Slate

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 12.8 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.

IW5151-03 is one of 3 executions of the IW5151 base reference. Underneath they are the same watch; what separates this one is a grey dial and a white gold case. Introduced in 2015.

Monopoussoir chronograph with 8 days of power reserve.

4 other watches in the library run the IWC 59360.

IWC

Portugieser Hand-Wound Monopusher Laureus

IW5153-01 · 46 mm

IWC

Portofino Hand-Wound Monopusher Red Gold / Silver

IW5151-04 · 45 mm

IWC

Portofino Hand-Wound Monopusher Platinum / Laureus Charity Night Milano 2015

IW515106 · 45 mm

IWC

Portofino Monopusher Tribeca Film Festival 2015

IW5151-05 · 45 mm