The Fortis Flieger F-39 is a modern pilot-style watch built around a compact 39 mm case, a bidirectional 12-hour bezel and a choice of bracelet or strap configurations. Its specs make it a versatile everyday option, but Fortis’s stated Swiss Air Force collaboration is not evidence that the watch is currently issued or independently tested for operational use.
What makes the Flieger F-39 different?
The F-39 pairs familiar pilot-watch cues—a high-contrast black dial and prominent hands—with a 12-hour bezel that can help track a second time zone. The 39 mm case gives it a smaller diameter than many contemporary tool watches, while its 50 mm lug-to-lug length is important to consider for wrist fit. Fortis also offers several dial colors and both bracelet and strap versions, so the F-39 is a family of configurations rather than one fixed specification.
Fortis says the design was developed in collaboration with the Swiss Air Force. That is the brand’s account of the design relationship; the available product information does not establish current military issue, qualification to a military standard or independent comparative legibility testing. Fortis’s description of the watch as “the most legible” is likewise a manufacturer claim, not an independently verified result. Fortis Flieger F-39
F-39 Original on Block Bracelet: specifications
The reference F4220005 is the Flieger F-39 Original on Block Bracelet. Fortis lists the following specifications for this version:
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- Classic handmade watch, 40 mm solid brass casing with stainless steel back
- Classic American pine wood presentation / keepsake pillowed box
- Croc print vegan leather bracelet with matching brass buckle
- Original parchment art on metal, vivid colors
- Limited Edition Original Art. Great Investment Potential for Watch Collectors.
| Specification | Fortis listing |
|---|---|
| Case | 39 mm recycled stainless steel; 50 mm lug-to-lug; 12.5 mm thick |
| Watch-head weight | 79 g |
| Water resistance | 200 m / 600 ft / 20 atm |
| Crystal | Sapphire, with anti-reflective coating on both sides |
| Bezel | Bidirectional 12-hour bezel with half-hour increments |
| Movement | Automatic UW-30; date; 38-hour power reserve |
| Dial and hands | Matte black, circular-brushed Brixtrack; Pilot Green Super-LumiNova X1 on Brix and hands; orange Berlac Fluor Synchroline sweep-seconds hand |
| Bracelet | Recycled stainless steel Block Bracelet with slide clasp, integrated microadjustment and screw-pin mounting |
| Case back | Stainless steel with Ultra-Engraving |
The watch’s 12-hour bezel offers a way to follow a second time zone by aligning the bezel’s hour scale with the hour hand. It is not a dedicated GMT movement, and the listed movement information does not describe an independently adjustable 24-hour hand.
How do the details work for everyday wear?
Fit: look beyond the 39 mm diameter
The 39 mm case diameter may suit people who prefer a less oversized watch, but the 50 mm lug-to-lug measurement can have a larger effect on how it sits across the wrist. Its 12.5 mm thickness and 79 g watch-head weight provide further context, though bracelet weight and personal fit will vary. If possible, compare the lug-to-lug span with a watch you already wear comfortably.
Rank #2
- Men's luxury timepieces with technical advancements and a sporty style
- 3 Hand, Date
- Silver-Tone Stainless Steel
- Spherical Mineral Crystal
- 100 Meters Water Resistant and 5 Year Limited Warranty
Timing and visibility
The half-hour markings on the bidirectional bezel offer more specific alignment than a bezel marked only by whole hours. The black dial, green Super-LumiNova and orange seconds hand are concrete design choices intended to distinguish the display. They are not, by themselves, evidence of a tested legibility advantage over other watches.
Water resistance and construction
Fortis lists 200 m water resistance, a screw-down crown with a triple-gasket system, and performance FKM gaskets. Those are substantial water-resistance specifications for a pilot-style watch, but the rating is not a substitute for following the manual’s operating and maintenance guidance. Fortis also specifies a sapphire crystal with anti-reflective coating on both sides.
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Rank #3
- Classic handmade watch, 40 mm solid brass casing with stainless steel back
- Classic American pine wood presentation / keepsake pillowed box
- Croc print vegan leather bracelet with matching brass buckle
- Original parchment art on metal, vivid colors
- Limited Edition Original Art. Great Investment Potential for Watch Collectors.
Movement and regulation
The standard listing identifies an automatic UW-30 with a date and 38-hour power reserve. Fortis labels its regulation “Chronometer,” but the page does not explain the certification details. Do not treat that wording alone as proof of a particular third-party certification or accuracy result.
Which F-39 configuration should you consider?
Fortis’s collection listing includes Original, Black, Petrol and Liberty Blue options, with Block Bracelet and Aviator Strap configurations. The comparison below reflects the collection and product pages retrieved on October 8, 2026; pricing and availability can change.
Rank #4
- MANUAL WINDING: Designed for precision, this hand-wound watch is powered by the exclusive H-50 movement, offering an extended 80-hour power reserve for reliable performance.
- WATER RESISTANT TO 100M: Withstands 10 bar (100 meters), ideal for swimming and outdoor pursuits. Perfect for those who demand resilient accessories that accompany them confidently on their explorative journeys.
- READY TO TAKE FLIGHT: A robust 36mm x 33mm stainless steel case and a black dial deliver reliability and precision. With mineral crystal for clear visibility, this watch is tailored to meet the demands of professional pilots and aviation enthusiasts.
- PREMIUM MATERIALS: Leather strap with pin buckle offers day-long comfort. The clean lines and sophisticated design make it the perfect accessory for both casual wear and formal attire, merging functionality with fashion.
- RICH HERITAGE: Over a century of Hamilton's legacy in field watches, admired for precision. Originally designed for WWI soldiers, these timepieces combine rugged durability with history, showcasing Hamilton's commitment to quality and innovation.
| Configuration or detail | What Fortis lists | Price shown in retrieved listing |
|---|---|---|
| Original on Aviator Strap | Vegetable-tanned cowhide leather strap, double folded and handmade in Germany; screw-pin mounting | 1,850 CHF on the collection page |
| Original on Block Bracelet | Recycled stainless-steel Block Bracelet; reference F4220005 | 2,450 CHF on the product page; some bracelet configurations on the collection page were shown at 2,650 CHF |
| Other listed F-39 options | Black, Petrol and Liberty Blue colorways; bracelet and strap configurations | Collection-page prices varied by configuration, from 1,850 CHF to 2,650 CHF |
The price figures are web-listing snapshots, not stable global prices. Local currency, taxes, stock and later changes may affect what is offered; check the current listing for the exact configuration you want. The Aviator Strap page does not state a lug width, so its mounting system should not be used to infer compatibility with third-party straps.
Independent reader supportYour contribution helps us test, update, and keep practical guides available for everyone.What comes with the standard bracelet version?
For the F-39 Original on Block Bracelet, Fortis lists an Alpha Box, a five-year warranty, a performance certificate, a user manual and a reversible screwdriver for changing between bracelet and strap. Confirm the included items and applicable warranty terms with the current listing for your market.
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- Mechanical Movement: Japanese NH35A Mechanical Automatic Movement, Frequency 21600 Times Per Hour (3Hz), Second Stop Device, Bidirectional Automatic Winding, 42 Hours of Energy Storage, quite accurate.
- Luminous：Luminous hands and markers.It can see the time in dark place or at night.
- Waterproof Watches: The watch is water resistant to 50 methers It can not only support daily hand washing, car washing, rain and other water contact sports, but also support long-term water sports such as snorkeling and swimming, diving.
- Fashion Pilot Watch: This men's watch is made of stainless steel Case, which not only ensures the comfort of the wrist, Also can easily match your clothes. Fits wrists from approximately 152mm to approximately 228mm.
- We provide professional services. If you need more detailed information about our watch, please contact us. We will be happy to answer and help you at any time.
Is the Fortis Flieger F-39 a good pilot watch?
It is a capable pilot-style watch if you want a 39 mm case, a second-time-zone bezel, strong stated water resistance and a range of color and attachment options. The main fit question is its 50 mm lug-to-lug span, not just the diameter. Its aviation connection should be understood as Fortis’s stated design collaboration with the Swiss Air Force—not proof of current service use or independent operational qualification.
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Product prices and availability are accurate as of the date/time indicated and are subject to change. Any price and availability information displayed on Amazon at the time of purchase will apply.
