Pilot's Watch Mark XVIII Hodinkee

In Context

At 39 mm it sits just under the modern norm — the band that suits the widest spread of wrists. At 10.8 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. 60 m covers rain and hand-washing comfortably; it is not a watch to swim in.

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.

IW3248-01 stands on its own in this catalogue — no other reference here shares its base number. It pairs a black matte dial with a ceratanium case. It was a limited edition. Introduced in 2019.

The 35100 is IWC's Sellita SW300 for the Portofino Automatic 34, built by Sellita to IWC's specification like the 35111. It powers 17 watches in this library. The SW300 matches the ETA 2892's dimensions, 25.6 mm across and thin enough for a dress case, and IWC's version runs at 28,800 vph with a 42-hour reserve and 25 jewels, finished and regulated by IWC. It is the movement that gives the 34 mm Portofino a mechanical caliber at a size where many maisons fit quartz. In the library it powers 16 [Portofino](/brands/iwc/portofino) Automatic 34 references, in steel with blue, green and silver dials and diamond bezels, and one Pilot's Watch Mark XVIII, the Hodinkee edition at 39 mm. The [35111](/calibers/iwc-35111) is the same base in the larger Portofinos and the Mark XVIII, and the [32111](/calibers/iwc-32111) the in-house five-day movement that succeeded the family.

16 other watches in the library run the IWC 35100.

IWC

Portofino 34 Stainless Steel - Diamond / Silver / Bracelet

IW6576-01 · 34 mm

IWC

Portofino 34 Stainless Steel / Blue / Mesh

IW3574-04 · 34 mm

IWC

Portofino 34 Red Gold / Silver

IW3574-14 · 34 mm

IWC

Portofino 34 Rose Gold / Silver / Santoni

IW3574-01 · 34 mm