IWC Portofino Chronograph (Ref. IW391002) Swiss

Delivered in a moderately oversized body, this new IWC Portofino Chronograph (Ref. IW391002) is a nice alternative to both Patek Philippe chronographs that are just too formal and Omega Speedmaster series, which is just too sporty. Relatively affordable and styled with attention to even smallest details, this is something that you want to wear in the office.

Overall Impression

The new model IW391002 seems to pick up were the 2008 Portuguese Hand-Wound Vintage Collection left off. It takes the leaf-shaped hands and makes them even more expressive while still allowing for good readability, the case is now even more massive-looking thanks to thicker bezel, yet the least of functions is extended well beyond usual hours, minutes and small seconds. It is now a full-fledged self-winding chronograph with a useful calendar.

IWC Portofino Chronograph (Ref. IW391002) in stainless steel

Although a lot of people will lament the lack of railway minute track, it is actually for the better making the piece’s dial visually lighter and the central chronograph seconds hand more precise when it comes to measuring short intervals where every 1/10th of a second counts (frankly, I can’t imagine a situation where you would really need such precision, but, hey, you need to somehow justify the hefty $6000 list price tag that this new chrono is accompanied with).


The 2011 IWC Portofino Chronograph (Ref. IW391002) automatic watch may be completely new, but it is still equipped with the good old Caliber 79320 self-winding movement.

The caliber in question is a slightly modified version of the well-known ETA Valjoux 7750 base movement.

Yes, the movement, to a bit of regret, is not an in-house job (and you probably won’t find a manufacture-grade mechanism in this price range when it comes to brands of such pedigree), but, on the other hand, a mass-produced mechanism is not only easier on your wallet, but also spares you a lot of trouble when it comes to keeping the engine in good working order.

As usual, the caliber features a rather average power reserve of 44 hours and has a small hacking seconds “complication” (just like the rest of the 7750-based movements.) When you set the watch, the second hand stops and resets to “0” position, which helps to increase the timekeeper’s accuracy.

Case & Strap

The movement is enclosed in a well-proportionate stainless steel case 42 millimeters in diameter and 13.5 mm thick. Like the rest of the refreshed series, the watch looks very slim and even refined in a sporty kind of way, mainly thanks to the brand’s traditional attention to details (I mean, just look at that pin buckle!)

This year’s Portofino takes a great deal of space even on an average wrist, but, being a more subdued (or, perhaps, less conspicuous) version of the Portuguese family (and the Portuguesers were initially nothing more than mere pocket watches adapted to be worn on a wrist,) this is something to be expected. Anyway, the gadget is superbly styled and will look great with a formal suit.

IWC Portofino Chronograph (Ref. IW391002, leather strap and pin buckle)


Due to limitations of the movement, the watch sports a standard tri-compax dial layout with a 30-minute counter at 12 o’clock, a 12-hour totalizer at 6 o’clock and a small seconds display at 9 o’clock.

The inevitable “day of week” and date apertures are located at their usual positions at 3 o’clock.

Well, although the watch is equipped with an ordinary movement and its collector’s value is almost zero, it may be a good choice if you are searching for a dressy timekeeper, which is supposed to be worn with business attire.

See also: IWC Portofino Automatic (Ref. 3565)

Photos: IWC

IWC Portofino Chronograph (Ref. IW391002) specification

Price: $6000
Movement: Automatic, IWC Caliber 79320 (base ETA Valjoux 7750), Swiss Made
Number of jewels: 25
Frequency: 28,800 vph
Functions: Hours, minutes, seconds, date, day of week, chronograph
Power reserve: 44 hours
Case material: Stainless steel
Shape: Round
Case size: 42.00 mm
Case height: 13.50 mm
Dial: Black
Numerals: Roman
Hands: Steel, leaf-shaped
Water resistance: 30 meters
Strap: Black leather
Crystal: Sapphire, convex
Back: Sapphire

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