Portofino Automatic Yellow Gold / Black - Pilot / Bracelet

In Context

At 34 mm it is classically proportioned: the size a dress watch was understood to be for most of the twentieth century, and small enough to sit under a cuff. At 8.1 mm thick it is about average for a modern wristwatch. The case back is closed, so the movement stays out of sight, 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 winds itself from the motion of your wrist. 42 hours of reserve carries it overnight, but not through a weekend in a drawer. At 28,800 vph the seconds hand advances 8 times a second.

9251 stands on its own in this catalogue — no other reference here shares its base number. It pairs a black dial with a yellow gold case.

An ETA 2892-A2 finished and regulated by IWC. The 2892 is the industry's reference thin automatic — slimmer than a 2824 and smoother to run — which is why it sits under so many Swiss brands' three-hand watches. IWC's version differs from the 37524 only in the height at which the hands are mounted, a case-fitting matter rather than a mechanical one.

35 other watches in the library run the IWC 37521.

IWC

Portofino Automatic Stainless Steel / White / Strap

IW3513-24 · 34 mm

IWC

Portofino Automatic Stainless Steel / White / Strap

IW3513-20 · 34 mm

IWC

Portofino Automatic Yellow Gold / White / Strap

IW3513-01 · 34 mm

IWC

Portofino Automatic Stainless Steel / Black - Breguet / Strap

IW3513-13 · 34 mm