Formex Aria: An elegant new model featuring an ultra-thin in-house movement

Most fans know Formex as a manufacturer of rugged watches that emphasize functionality, ergonomics, and technical features. That’s how the Swiss brand has built its reputation. The models released so far have shown that it knows how to make “tools” with their own distinct character—all at very reasonable prices.

A New Direction for the Swiss Brand

The brand is signaling that it no longer wants to be seen merely as a manufacturer of technical sports watches. And when we look back at the brand’s history, it actually makes perfect sense. The first Formex watches were large, rugged timepieces inspired by the world of motorsports and sports cars. Their design was bold, technical, and definitely not for everyone.

The turning point came when the Granit family took over the brand. They preserved Formex’s technical DNA but gave it a more modern and versatile look. This led to the creation of the Essence, Reef, and later Field models, which maintained a focus on design, ergonomics, and innovation while also beginning to appeal to a much wider audience. Suddenly, these watches were no longer just for people with large wrists or lovers of bold designs.

Formex Aria Video Review

It was then that Formex began to earn respect not only among customers but also among watch enthusiasts and reviewers. The brand gradually proved that it could offer technical solutions that often cost several times more from the competition. To me, the Aria thus feels like the natural culmination of this entire journey. It doesn’t stray from the technical values on which Formex was built, but elevates them to a much more elegant and luxurious level. It’s a model that shows just how far an independent brand can come in a few years if it has a clear vision.

If you’ve ever heard someone say that a watch “wears itself,” this is exactly what they mean. After a few minutes, you simply forget you’re even wearing it.

Formex FX01 Manufacture Caliber with a Micro-Rotor

Although the slim titanium case and integrated bracelet catch the eye at first glance, the true heart of the Aria model is the new in-house FX01 caliber. And it is around this caliber that Formex designed the entire watch. The movement was developed in collaboration with the Swiss brand Horage and is based on its award-winning K2 caliber. However, it is not merely a repurposed mechanism. Formex has modified its construction, appearance, and final finish to such an extent that it rightfully refers to it as its own in-house caliber.

The FX01’s greatest strength is its micro-rotor architecture. Unlike a traditional automatic movement, the rotor does not cover the entire mechanism but is integrated directly into its structure. As a result, the movement measures just 2.9 mm, which made it possible to create a watch only 6.9 mm thick without having to resort to manual winding. Yet the technical specifications are by no means lacking. The caliber utilizes an all-silicon regulating mechanism—including the hairspring, escape wheel, and anchor—offers approximately 72 hours of power reserve, and each individual piece receives COSC chronometer certification.

Titanium case and integrated bracelet

But there’s one more thing I like. This time, Formex didn’t start by building the watch and then look for a suitable movement to fit it. They did exactly the opposite. First, the caliber was developed, and only then did they begin designing the case, bracelet, and overall silhouette of the watch around it. That’s why the Aria feels so compact, light, and natural. It’s the result of a well-thought-out design from the very foundation. And if you look through the sapphire crystal caseback, you’ll see that the brand didn’t cut any corners here either. The bridges feature their own black-gold finish, and the watch includes hand-finished facets as well as an engraved tungsten micro-rotor bearing the brand’s logo. It’s clear that the FX01 was meant to be the star of the entire project.

That’s one of the reasons why Jirka and I forgave them for having only 3 ATM of water resistance in our previous podcast.

Unique dial and striking luminescence

At the same time, Formex has retained one of its greatest strengths—its original dials. The company designs and manufactures them entirely on its own. This is beautifully evident in the Aria. The three-dimensional dial with varying levels looks elegant, yet it doesn’t lose the distinctive character that sets it apart from the competition.

It all comes down to luminescence—an area where, in my opinion, Formex has long been among the best. After all, just think back to the latest color variations of the Field model with black luminescence. I’ll admit that it was precisely because of that feature that I opted for the classic white finish back then. Black luminescence is usually more of a design feature than something truly practical. But Formex clearly has its own formula, because even the black luminescence glows surprisingly well. It’s a similar story here—the special Super-LumiNova Tritec mixture works really well and confirms that the brand doesn’t overlook any details.

Lightweight and comfortable watches

The biggest surprise, though, is how they feel when worn. Although I found the Essence 43s comfortable too, so it’s not really that surprising. How do they do it? The specs on paper look great—a 40-mm diameter, a thickness of just 6.9 mm, and a lug-to-lug length of only 45.5 mm. And the reality is even better. Grade 5 titanium has brought the weight down to just under 80 g, including the bracelet, and combined with the case’s ergonomic design, the result is a watch you practically don’t feel on your wrist.

If you’ve ever heard someone say that a watch “wears itself,” this is exactly what they mean. After a few minutes, you simply forget you’re even wearing it. The craftsmanship, finishes, and quality of the bracelet make it clear that you’re definitely not wearing something from a lower price range. Quite the opposite. The bracelet itself deserves praise from a practical standpoint as well. It features a quick-release clasp and a patented micro-adjustment system that allows you to fine-tune the length in a matter of seconds. Honestly, though, I don’t know why I’d ever want to take it off this watch. Design-wise, it forms a single unit with the case, and that’s exactly where the Aria shines.

Where is Formex headed in the future?

Perhaps the most interesting aspect is where the future of the entire brand is headed. Formex is gradually modernizing its established collections, adding new movements with longer power reserves, and raising the overall standard of craftsmanship. It’s almost certain that this will be reflected in the prices as well. That’s precisely why I think that if you’ve been considering Formex for a long time or want to add this brand to your collection, there’s perhaps never been a better time than right now.

The brand’s ambitions are enormous, and so far, Formex has delivered on every promise it has made. The Aria, meanwhile, shows that the brand isn’t afraid to step outside its comfort zone and offer a watch that can confidently compete with established players in the luxury integrated bracelet segment. If this is the direction Formex continues to take, I think we have a lot to look forward to.

Formex Aria Ardesia Grey 0513.1.5133.100

186 200 €

The Formex Aria Automatic Manufacture Chronometer 40 mm Ardesia Grey 0513.1.5133.100 represents a new era for the Formex brand. The watch comes with a proprietary manufacture movement with a micro-rotor, which has made it possible to create an…

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Specifications

• Reference: 0513.1.5133.100, 0513.1.5103.100, 0513.1.5033.100
• dimensions: 40 x 6.9 x 45.5 mm
• Movement: FX01 COSC automatic
• glass: sapphire with anti-reflective coating
• Water resistance: 3 ATM