Dive Into the Grid: IWC Cools Down the Ingenieur Automatic with a 35mm ‘Pool’ Dial Watch 

Every watch trend has a lifecycle. For a good 20 years or so, the market suggested that a luxury sports watch needed to be chunky and imposing, not to mention resolutely industrial-looking, even somewhat aggressive. Suffice to say, if you happened to have a slender wrist back then, you’d be hard-pressed to find an integrated steel watch that didn’t feel like a slab of metal on the wrist. We endured an era where wristwatches frequently spilt over the edges of the wrist, loudly announcing their presence with sharp angular lines, octagonal bezels and cumbersome bracelet links. Yet, the pendulum of taste is finally swinging back toward a more classic style and collectors are once again enjoying the comfort that comes with a timepiece of modest proportions. 

When we look back at those initial mid-1970s watches, none of them was actually oversized. They were architectural, yes, but they were innovated by Gérald Genta, the undisputed maestro of the integrated steel sports watch, who took the idea of rugged dependability and wrapped it in a highly structural, barrel-shaped silhouette for the legendary 1976 Ingenieur SL Reference 1832.

A couple of years ago, the craftsmen in Schaffhausen thrilled the enthusiast community by reviving those pure Genta lines in a modern 40mm format, marking its return to form. However, for those of us who believe the absolute sweet spot for a daily-wearing watch hovers much closer to the mid-30s, this integrated case could sometimes feel a touch too expansive. The rigid nature of the initial links on any integrated bracelet always adds a few phantom millimetres to how a watch actually wears.

Recognising the issue, IWC has introduced a refined alternative – the new Ingenieur Automatic 35, specifically the reference IW324902, featuring the vibrant "Pool" dial that represents the recalibration of an icon. It takes the DNA of the 1970s and distils it into a tailored tool that somehow feels entirely at home in the modern world.

Perfect Proportions

It’s not unusual for a brand to take the digital blueprints of a cult favourite and shrink every dimension by a uniform percentage. The problem with this is that it almost always results in a watch that looks visually compressed or functionally compromised. IWC’s designers, however, avoided this by approaching the 35mm case as a blank canvas, recalculating every single angle, bevel, and curve so that the muscular posture of the Ingenieur remained completely intact. The result is a case that measures precisely 35mm across, but crucially, it has been engineered to a remarkably slender thickness of just 9.1 millimetres, making it the most wrist-friendly Ingenieur so far. 

First Impressions – the Case 

When you place the IW324902 upon your arm, it initially bestows a sense of absolute balance without sitting too high or wobbling, anchoring itself to the wrist with a comforting, low profile. The iconic bezel remains the focal point of the architecture. Unlike early iterations where the bezel was screwed down randomly, leaving the five signature recesses pointing in arbitrary directions, the modern Ingenieur utilises five functional polygonal screws that secure the bezel to the casing ring. They’re perfectly aligned, offering a visual symmetry that’s going to appeal to the perfectionist in all of us.

The finishing across the stainless steel case is a labour of love, with top bezel surfaces featuring a sunburst brushed finish that diffuses harsh light, and a steep outer edge adorned with a polished mirror-like gleam. This alternating treatment of satin and polish continues down the flanks of the barrel-shaped case, creating a play of light that highlights the complexity of the metalwork and the famous Ingenieur silhouette. 

For absolute purists, the housing inside this Ingenieur watch has foregone the heavy soft-iron inner cage that protected previous movements from intense magnetic fields, which may cause a brief moment of hesitation for IWC purists. However, when you weigh up the practicalities of modern-day life, this omission brings an advantage. Our magnetic threats are much smaller these days (smartphones, speakers and laptop clasps), so by removing the soft-iron core, IWC was able to achieve that beautifully svelte 9.1mm profile. This reduction in extreme anti-magnetism pays enormous dividends in pure, everyday wearing comfort.

Diving into the Pool Dial

The dial of the new Ingenieur Automatic 35 ref. IW324902 definitely delivers the soul. IWC refers to this specific hue as "Pool," and it’s an incredibly fitting moniker. It’s a highly nuanced shade that sits somewhere between a vibrant turquoise, a soft mint green, and a deep aquamarine, completely changing character depending on your environment. Under the harsh fluorescent lights of an office, it reads as a crisp, contemporary green. 

What elevates this dial from being a fun splash of colour into high horology is the complex texture stamped into its surface. IWC employs a distinctive "Grid" pattern, consisting of small structural lines offset by 90 degrees to one another, pressed deeply into the soft iron blank. It creates a fascinating topography of negative relief so that when your wrist moves, these tiny metallic canyons catch the light randomly, producing a shimmering, 3D effect that’s full of life. It’s a technical aesthetic that pays homage to the watch's engineering roots. 

The dial hardware is executed with total precision, too. Rhodium-plated baton indices are applied carefully by hand, each one featuring a generous application of bright white Swiss Super-LumiNova for legibility. The hour and minute hands share this rhodium finish and luminous fill, while the peripheral minute track is printed crisply upon a slightly smoother outer chapter ring, managing to frame the central grid pattern perfectly.

At the 3 o’clock position, a framed date window sits quietly against a stark white disc with black numerals. In modern watch collecting circles, there’s still a healthy demand for date wheels that perfectly colour-match the dial. The white disc used here mirrors the exact size and visual weight of the luminescent baton index sitting opposite it at nine o’clock, delivering some much-needed horizontal symmetry. 

A Bespoke Engine for a Refined Chassis

A beautiful exterior demands a capable heart, and IWC makes no compromises here. The mechanics housed within the Ingenieur Automatic 35 IW324902 are deeply impressive. IWC has equipped this reference with the Calibre 32111, an automatic movement manufactured entirely within the Richemont Group’s specialised facilities.

In the past, brands would often power smaller watches by modifying off-the-shelf calibres that were originally designed decades ago, resulting in mediocre performance specifications. But the Calibre 32111 is a modern piece of micro-engineering, operating at a brisk frequency of 28,800 vibrations per hour (4 Hertz) and providing a smooth, sweeping seconds hand.

Thanks to a highly efficient bidirectional pawl-winding system and a finely tuned mainspring, the Calibre 32111 delivers a staggering 120 hours of autonomy. That translates to five full days of power, meaning you can take the watch off your wrist on a Friday evening, leave it resting on your dresser throughout a long weekend, and strap it back on early Wednesday morning to find it still ticking away perfectly. It’s an impressive feat for a watch of such slight proportions. 

The watch features a solid, closed caseback, a traditional hallmark of the Ingenieur line. The movement hidden beneath is nonetheless decorated to high luxury standards, ensuring the mechanical integrity matches the external beauty. Furthermore, the crown screws down securely against the case, sealing the watch to a highly practical water resistance of 10 bar (approximately 100 metres).

The Art of the Integrated Bracelet

You can engineer the most spectacular watch head in existence, but if the bracelet doesn’t interact comfortably with the wrist, the entire experience falls to pieces. The integrated bracelet is a notoriously difficult element to perfect as it is, but it must flow from the case with an unbroken visual line and with flexibility too. IWC’s execution of the H-link bracelet on the Ingenieur 35 is exceptional. The links themselves have been re-proportioned to suit the smaller case, featuring a relatively short length that allows the metal to articulate freely. Instead of feeling like a rigid metal bangle, the bracelet drapes around the wrist with a nice fluidity. 

The finishing techniques applied to the case are echoed flawlessly throughout the bracelet. The prominent H-shaped links feature a robust, vertical satin brushing that easily hides any tiny scuffs and marks accumulated during daily wear. The smaller, rectangular centre links are polished to a high mirror finish that catch the light as you tilt your wrist. 

The butterfly folding clasp is just as well engineered. By hiding the folding mechanism entirely beneath the links, it remains completely flat without any bulky metal hinge digging into your skin when your arm is resting on a desk or a keyboard. 

The IWC Ingenieur Automatic 35 is a Modern Classic Reborn

The IWC Ingenieur Automatic 35 IW324902 is a watch of considerable restraint, proving that a luxury sports watch doesn’t need to shout to command a room. By taking the revered, architectural language of Gérald Genta and softening it with the wonderfully compact 35mm proportions, along with the radiant "Pool" dial, IWC has created something that feels remarkably fresh, yet deeply rooted in horological history.

Without a doubt, it’s going to be a timepiece designed for those who appreciate the subtle nuances of fine metal finishing and the invisible reassurance of a 120-hour power reserve, not to mention the pure, tactile pleasure of a perfectly tailored bracelet. Watches like this reach all and serve as a daily reminder that true elegance is found not in excess, but in perfect proportion.

Experience the IWC Ingenieur Automatic 35 watch for yourself at our shop in Lancaster. Banks Lyon are experienced, helpful watch sellers based in the North West, helping our customers find their next luxury watch purchase.