Formex Field Automatic Review: A Swiss Titanium Beast Built for the Wild
Built for the Wild
There is a certain kind of watch collector out there who doesn’t spend their weekends polishing their pieces and rotating them into felt-lined trays. They wear their watches hard. They take them up mountains, through rivers, across trails where the signal disappears and the terrain doesn’t care about your gear. For those people, Formex built the Field Automatic. And honestly? It might just be one of the most compelling cases for a rugged Swiss tool watch in the entire microbrand space right now.
Formex is a brand that already has our respect. If you’ve been following along, you’ll know we covered both the Formex Essence ThirtyNine Automatic Chronometer and the Formex REEF 39.5, two very different expressions of what this Swiss brand is capable of. The Essence ThirtyNine leans toward refined everyday elegance, and the REEF makes a strong case for itself in the dive watch category. The Field Automatic is a different animal entirely. It leans toward the door, grabs a backpack, and heads outside (no appointment necessary).
This is a watch with conviction. Every design choice here is deliberate, every material selected with purpose, and the result is a timepiece that wears its intentions on its sleeve, or rather…. on its wrist.
Case and Dimensions: Purpose-Built Toughness
One of the standout features of the Field Automatic is its 40mm titanium grade 2 case, and not just any titanium treatment either. Formex subjects the case and crown to a special hardening process that elevates the surface hardness from 145 Vickers to approximately 900 Vickers. To put that in perspective, that is a level of hardness that makes this watch genuinely scratch and fingerprint resistant in everyday use, while still retaining all the natural benefits of titanium: lightweight, hypoallergenic, anti-magnetic, and corrosion-resistant. The case weighs just 54g on its own, and you genuinely feel that on the wrist.
At 10.6mm tall (with a perceived height of 8.8mm thanks to the case geometry) and a 46.6mm lug-to-lug distance, the Field sits with authority on the wrist without feeling intrusive. The 20mm lug width is a practical sweet spot, opening the door to a super wide range of third-party strap options. That screw-down crown is also titanium, which completes the package nicely and contributes to a water resistance rating of 150 metres. Yes, 150m. This is a watch built to get wet.
The sandblasted finish across the case deserves special mention because it absolutely transforms the character of the piece. It is tactile, slightly matte, and completely unpretentious. No mirror polishing competing for attention here. The Field wears its ruggedness without apology, and oh, it does it so well.
A Colourful Dial that Captivates
Six dial options is bold, and Formex absolutely pulls it off. The colourways available are Charcoal, Petrol Blue, Ash Grey, Mahogany Red, Ultra Violet, and Sage Green, all inspired by vintage machinery aesthetics. Each one delivers a high-contrast reading experience, which is the first job of any proper field watch. The Ultra Violet option (which is the hero variant for this review) brings a cool, almost anachronistic energy to the collection and looks genuinely striking in natural light.
The dial itself is a one-piece sandwich construction, featuring recessed numbers and hour markers alongside a curved outer chapter section. That curved chapter ring is a subtle but effective design choice. It creates a sense of depth that photographs rarely do justice to, and in person it genuinely draws the eye. Numbers, markers, and the brushed hands are all hand-filled with old radium Super-LumiNova (100% safe, in case you were reaching for your Geiger counter), which emits a bright yellowish-green glow at night. Legibility in the dark is excellent, no squinting required.
What makes the dial lineup particularly exciting is that each colour option gives the watch a completely different personality. Charcoal reads almost military and understated. Petrol Blue leans nautical. Mahogany Red has a vintage tool watch warmth to it. Sage Green is earthy and very much of this moment in horology. The point is, Formex didn’t just offer six colour options to fill a product grid. They genuinely nailed each execution, and any of them would be a worthy choice.
Movement: A Tried-and-Tested Workhorse
Under the hood, the Field Automatic runs on a Sellita SW200-1, the Swiss Made self-winding calibre that has become something of an industry benchmark at this price tier for very good reason. It offers 26 jewels, a date display at 6 o’clock, and a 41-hour power reserve. The movement beats at 28,800 vibrations per hour and can be serviced by virtually any certified watchmaker on the planet, which matters a great deal for a watch that travels.
Formex houses the movement behind an enclosed caseback featuring an engraved honeycomb pattern, which gives the underside of the watch a rugged, almost industrial character that suits the Field’s overall ethos perfectly. There is no exhibition window here, which is a deliberate trade-off in favour of durability and water resistance. Sometimes the best movement is one that stays safely out of sight (doing its job, ticking away reliably while you’re halfway up a ridge somewhere).
Versatility on the Wrist: Strap and Packaging
The Field Automatic ships with strap options that reflect its dual personality as a serious outdoor tool watch and a daily wearer. The nylon velcro strap adds just 5g to the case weight and is both durable and comfortable, particularly for active use where quick adjustment is a priority. The Italian calf leather straps, on the other hand, come equipped with Formex’s patented carbon fiber composite folding clasp, which features a 7mm fine-adjustment system and can be operated while the watch is on your wrist.
All straps are interchangeable by hand with no tools required, thanks to the quick-release spring bar system. It is a genuinely practical feature that encourages actual strap swapping rather than just the theoretical kind. Going from a trail run on a velcro nylon strap to dinner on a leather strap takes about ten seconds. That kind of wearability is the hallmark of a watch designed by people who actually use and care about their watches.
Why the Formex Field Automatic Stands Out
Formex has packed a lot of genuine value into the Field Automatic, but a few things in particular make it rise above the crowded field watch market:
- Titanium Grade 2 with hardening treatment: Not just lightweight but genuinely tough, this case treatment goes well beyond standard grade 2 properties and earns its outdoor credentials
- Six thoughtfully executed dial colours: Each colourway is carefully considered and avoids the trap of offering variety purely for variety’s sake
- Sandwich dial construction with recessed indices: The depth and legibility of the dial is something you appreciate more in person than in photos
Sellita SW200-1 with 41-hour power reserve: A reliable, globally serviceable movement that is perfectly matched to an adventure-ready watch
- Patented fine-adjustment carbon clasp: A small detail with a big daily impact on comfort and usability
A True Field Watch for Adventure Seekers
The Formex Field Automatic is one of those rare watches that knows exactly what it is and delivers on that identity without compromise. It is rugged, well-built, and carries an unmistakable solidity in the hand. The sandblasted titanium case feels purposeful in the best possible way. The colour-rich dial lineup ensures there is a version for everyone, whether you prefer the understated cool of Ash Grey or the bold statement of Ultra Violet. And at 150 metres of water resistance with a screw-down titanium crown and a workhorse Swiss movement inside, this is a watch that will follow you pretty much anywhere life takes you (and back again, reliably, without a complaint).
If you enjoy the outdoors, value genuine build quality, and want a Swiss automatic that earns its adventure credentials through material choices rather than just marketing copy, the Field Automatic belongs on your shortlist. I would go as far as saying it is a genuine must-have in this category. It is the kind of watch you strap on Monday morning and never want to take off.
Specifications:
Brand – Formex
Model – Field Automatic 40mm (Ultra Violet / Charcoal / Petrol Blue / Ash Grey / Mahogany Red / Sage Green)
Case Material – Titanium Grade 2 with surface hardening treatment
Case Dimensions – 40mm diameter, 10.6mm height (perceived 8.8mm), 46.6mm lug-to-lug, 20mm lug width
Water Resistance – 150m (15 bar / 500ft)
Strap – Nylon velcro with quick-release, Italian calf leather with carbon fiber composite folding clasp and patented 7mm micro-adjustment
Crystal – Sapphire crystal with internal anti-reflective coating
Movement – Sellita SW200-1, 26 jewels, date display, 41-hour power reserve
Price – Starting at €850 / $1000
Lume – Yes (Old Radium Super-LumiNova on hands, numbers, and markers)
Limited Edition – No
Power Reserve – 41 hours
Official store link here.
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About Formex Field Automatic: Key Questions Answered
Is the Formex Field Automatic worth buying for everyday wear?
Absolutely. Despite its outdoor-ready credentials, the Field Automatic is a genuinely versatile daily wearer. The lightweight titanium case means you barely notice it on the wrist, the quick-release strap system lets you switch between the nylon velcro and leather options in seconds, and the sandblasted finish hides minor scuffs far better than a polished case ever could. It is tough enough for the trail and refined enough for the office (time flies when you’re having fun wearing it).
What dial colour should I choose for the Formex Field Automatic?
It really comes down to how you plan to wear it. Charcoal and Ash Grey are the most versatile, pairing well with virtually any outfit and leaning into the classic military field watch aesthetic. Petrol Blue and Ultra Violet make a bolder statement and work beautifully as a focal point in a more casual wardrobe. Mahogany Red and Sage Green are the most characterful of the bunch, with a warm vintage tool watch energy that appeals to collectors who want something a little less expected. Any of the six is a strong choice.
How does the Formex Field Automatic compare to other Formex models?
The Field Automatic occupies a distinct space within the Formex lineup. Where the Essence ThirtyNine Chronometer targets the refined everyday dressy-sport segment with its COSC-certified movement and degradé dials, and the REEF 39.5 goes deep (literally) into dive watch territory with its rotating bezel and diver credentials, the Field is the brand’s dedicated outdoor tool watch. It shares the same Swiss Made manufacturing ethos and attention to finishing across the range, but its titanium case, sandwich dial, and adventure-first design language make it the most rugged and purposeful of the three.
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