The Swiss Formex AirField Automatic Jet Black Khaki Green Nylon-Velcro 0661.1.6526.877 watch is based on the proven design of the Field series, complemented by distinctive aviation-inspired elements. It retains the characteristic lightweight and durable 40 mm titanium case, but now features a dial and hands designed with an emphasis on quick orientation and easy readability. The Jet Black version is the most understated variant of the new AirField collection, and its appearance is reminiscent of instruments in an aircraft cockpit.
The watch case is made of Grade 2 titanium with a specially hardened surface reaching a hardness of 900 Vickers ( compared to the original hardness of 145 Vickers), which significantly increases scratch resistance. All this while maintaining a low weight (the case weighs just 45 grams), high comfort, and the hypoallergenic properties of titanium.
The watch’s aviation theme is also reflected in the design of the titanium caseback, which features an embossed image of a star-shaped aircraft engine with a propeller.
The most striking change from the Field series is the new dial with aviation motifs. Its finely grained black surface is complemented by recessed Arabic numerals and broad sword-shaped hands. At the 12 o’clock position is the classic pilot’s triangle with two dots, which facilitates quick orientation. An interesting detail and a nod to aviation is the aircraft-shaped counterweight on the seconds hand.
The dial is protected by a sapphire crystal with an internal anti-reflective coating and high scratch resistance. Super-LumiNova® BGW09 Grade A luminescent material applied to the hands, numerals, and hour markers ensures better readability in low-light conditions. The recessed numerals and hour markers give the dial a visible sense of depth. All of this is accentuated by a thoughtfully designed date window at the 6 o’clock position, featuring a bezel matching the dial color.
The watch is powered by a Sellita SW200-2 Power+ self-winding mechanical movement with a power reserve of approximately 65 hours. The movement, operating at a frequency of 28,800 vibrations per hour, naturally offers the option of winding via the crown and a hacking function to stop the seconds hand when setting the time.
The case is complemented by a very comfortable green elastic nylon strap, secured with a Velcro clasp, which allows for a comfortable fit on the wrist.
This watch is water-resistant to 150 m, thanks to its screw-down crown and case back. The case diameter is 40 mm, so the watch fits perfectly on most men’s wrists.
A leather strap is available for purchase separately, featuring a carbon folding clasp with an innovative system for fine micro-adjustment within a 7 mm range. You can easily adjust the length by pressing the side button without having to remove the watch from your wrist.
You can also find this watch under the model number Formex 0661.1.6526.877
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| Brand | Formex |
| Gender | Male |
| Style | Pilot, Sports, Universal |
| Origin | Swiss |
| Guarantee | 5 years |
| Waterproof | 150 m |
| Weight | 59 g |
| Movement | Automatic |
| Caliber | Sellita SW200-2 Power+ |
| Movement accuracy in seconds | ±20 s / day |
Power Reserve ![]() |
65 hours |
| Case size | 40 mm |
Lug-to-lug: ![]() |
46,6 mm |
| Case height | 10,5 mm |
| Case shape | Round |
| Case material | Titan třídy 2 |
| Case color | Silver |
| Crystal material | Sapphire - anti-reflective |
| Dial | Analog |
| Dial color | Black |
Threaded lid ![]() |
Yes |
| Strap material | Nylon |
Buckle ![]() |
Velcro |
| Strap Width | 20 mm |
| Strap color | Khaki |
Quick release system ![]() |
yes |
| Date | Yes |
| Functions | Date, Screw-on crown |
Luminescence ![]() |
Super-LumiNova hands, numerals and indexes |
| Other functions | 26 jewels, 28.800 oscillations / hour |
We guarantee the accuracy of the data. Did you find a mistake? Let us know and get 200 CZK on Watch purchase.
Guarantor: Kateřina Žváček
Jiří Štencek
+420 252 252 306
Mo-Th 9-19
Fr-Sa 9-16
info@helveti.eu
The product is included in categories
Field Automatic Men's automatic watches Men's Swiss watch Men's silver watches Men's sports watches Men's titanium watch Men's watches with date Men's black watches Men's pilot's watches Men's watches novelties Men's watches over 400 EUR Field Automatic Men's mechanical watches Men's universal watches Men's watches with sapphire crystal Watch gift for men Men's green watches Formex Formex
Formex Watches is an independent Swiss watch manufacturer based in Biel-Bienne, the cradle of Swiss watchmaking, where the entire production process takes place from design, development, assembly and testing of all watches. The company was founded in 1999 with the aim of producing watches that will meet the highest quality standards. The brand is known for the use of high-tech materials and the development of unique improvements and functions, leading to the technical perfection of the watch and an increase in wearing comfort - for all of them, let's name the Case Suspension System, a patented suspension system of the case, protecting the movement of the watch during impacts and increasing comfort on the wrist.
The Formex brand was founded by two brothers, watchmakers and watch enthusiasts who wanted to combine their passion for watches with their love of motorsport. High resistance is therefore typical for the design of the watch, suitable even for extreme conditions. It is aimed not only at watch lovers, but also at all athletes, outdoor enthusiasts and adventurers who require functionality and high reliability.
Formex is a combination of the French words "forme" and "extrème", loosely translated as extreme form/shape. All watches assembled at the brand's headquarters in Biel-Bienne meet the strictest requirements of the Swiss Made label. Every single piece goes through careful quality control and testing. Formex watches reflect love for watchmaking, high quality workmanship, innovative approach, relentless development, use of special materials and exceptional craftsmanship.
Helveti.eu is an authorized retailer, specialist and certified expert of the Formex brand.
Series: Essence Essence Leggera Field Automatic Reef
Manufacturer information: Formex, Chemin du Long-Champ 95F, 2504 Biel, Switzerland / info@formexwatch.com
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1 → We check, clean and set
We will check the functionality, set time, date and clean the watch carefully.
2 → We will carefully pack the watch
So that the watch does not have a chance to be damaged. We use special vacuum pads.
3 → We insure the watch against damage from the carrier
To be sure, we will insure the watch against breakage, so there is nothing to fear.
With each watch, you will receive a gift of your choice from us. Gifts are graduated according to the value of the order.
From €0 = Cleaning cloth, with which you can polish the glass of a watch.
From €100 = Stroke shortener, you can adjust the watch bracelet to your hand.
From €150 = Helveti canvas bag.
From €150 = Credit card knife.
From €170 = Donut watch case.
From €400 = Parker Jotter.
From €600 = knife Mikov 100-NH-2A blue.
From €1000 = Victorinox Waiter knife with 9 functions.
From €1400 = Watchroll for 2pcs.
From €1650 = Helveti leather watch roll.
From €2000 = Leather travel case.
From €2800 = Leatherman REV.
From €4000 = Wooden watch box Helveti.
From €6000 = Watch winder Helveti black.
And on top of that, a 5-year warranty (You can find the terms of the extended warranty here) and free shipping.
You can view the gifts here: