IWC Portugieser Automatic 42 Review: Seven Days, One Dial

The Automatic 42 is a 42.4 mm stainless-steel watch, roughly 12.9 mmthick, with applied Arabic numerals, slim feuille hands, small seconds at 9 o'clock, a power-reserve indicator at 3, and a sapphire case back over IWC's in-house calibre 52011. The IW501705 reference pairs a champagne-toned "Dune" dial with gold-plated hands and gold appliqués on an alligator strap.

What distinguishes it from the wider Portugieser family — which includes the Chronograph, the Perpetual Calendar and the Yacht Club — is that it does nothing else. No chronograph registers, no calendar, no tachymeter. Two subdials, two hands, a week of running time. It is the version of the collection that most closely resembles the instrument it descends from, and our IWC brand guidesets out where it sits against the Pilot's Watches and the Portofino.

The headline number is 168 hours. The calibre 52011 stores a full week of power in two barrels rather than one, and it displays what is left on the dial rather than hiding it behind the case back.

The practical consequence is the reason to buy this watch. Anyone who rotates three or four watches knows the ritual of picking one up dead, winding it, resetting the time and the date, and doing it again a fortnight later. A seven-day reserve removes that entirely: a Portugieser set down on Sunday is running and correct the following Saturday, and the indicator on the dial tells you at a glance whether you have days or hours in hand.

The movement itself is substantial — 37.8 mm across and 7.6 mm tall, 257 components, 31 jewels, running at 28,800 vph. That diameter matters aesthetically as well as technically: a large movement fills a 42 mm case properly, so the view through the sapphire back is a movement rather than a small movement surrounded by a spacer ring, which is what a disappointing number of large watches show you.

IWC's Pellaton system, devised by Albert Pellaton in the 1940s, is a genuinely clever piece of engineering: instead of a rotor geared to the barrel, a cam on the rotor axis drives two pawls that ratchet the winding wheel in both directions of rotation. It is efficient, and efficiency is exactly what a twin-barrel seven-day movement needs — there is a great deal of mainspring to fill.

It also had a known weakness. Pawls and cam are small components under repeated load, and on older Pellaton movements they were a documented wear point. The current generation addresses it directly: the key winding components are made from zirconium oxide ceramic, which IWC describes as virtually wear-free. This is not marketing dressing on a solved problem — it is a real fix to a real historical criticism, and it is a legitimate reason to prefer a current 52-series movement over an older one on the secondary market.

The Portugieser wears exactly as large as it is. At 42.4 mm across and close to 13 mm thick, with fairly straight case sides and a thin bezel that pushes the dial outward, there is no optical trick making this a smaller watch. On a wrist under about 6.75 inches it will look like a statement.

What it does have is an unusually good dial-to-case ratio. The bezel is narrow, the dial is enormous relative to the case, and the combination of applied numerals and slim feuille hands keeps a large surface from reading as empty. It is among the most legible watches at any price, which is the correct outcome for something descended from a navigational instrument.

On the strap: the alligator is well made and appropriate, but this is a watch that changes character considerably on different straps, and 42 mm of case earns the flexibility. See our leather strap guide and the tools for changing one without marking the lugs.

Here is the compromise, and we are not going to be diplomatic about it. The Portugieser Automatic 42 is rated to 5 bar — roughly 50 metres. On a watch of this size, at this price, that is genuinely poor.

Fifty metres is a splash-and-handwashing rating. It is not a swimming rating and it is certainly not a diving one; our water resistance explainercovers what each figure actually permits. Competitors at half the money offer 150 m and a screw-down crown as a matter of course — the Omega Aqua Terra is the obvious example.

Is it disqualifying? Only if you were going to swim in it. The Portugieser is a dress-sport watch that leans dress, and 50 m is entirely adequate for the life it will actually lead. But it is the specification a buyer is most likely to discover after purchase and resent, so know it going in.

The IW501705 was introduced in 2024 at approximately $13,500 US (€14,000) for the steel model on alligator. IWC adjusts list pricing annually, so verify current figures.

More usefully: IWC is one of the brands where the market price and the list price diverge meaningfully. Grey-market retailers routinely discount IWC, and the secondary market for Portugieser references is well supplied. A buyer paying full list at an authorised dealer is paying for the warranty and the box experience rather than for scarcity — which is a legitimate choice, but it should be a conscious one. Our guides to where to buy luxury watches online and the best pre-owned dealers cover the trade-offs, including what a grey-market warranty actually means.

Do not buy this expecting appreciation. IWC resale is unremarkable and the Portugieser is not a scarcity play. It is a watch to buy because you want to wear it for a decade.

The Portugieser Automatic 42 is the best expression of a genuinely good idea: a large, legible, instrument-derived dial wrapped around a movement that runs for a week and tells you so. The ceramic-reinforced Pellaton system fixes the one historical criticism of IWC automatics, and the dial is among the finest in production at any price.

It is let down by 50 m of water resistance and by a size that will not suit every wrist, and it will not hold value the way a steel sports Rolex does. If those are acceptable — and for a watch bought to wear rather than trade, they should be — this is one of the most satisfying automatics in the $10,000–$15,000 band. If water resistance is non-negotiable, read our Omega Aqua Terra review next, and our best watches under $10,000 guide for the field below it.