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1Fix the driver behind crashes, sound loss and screen glitches2Repair Windows errors before they cause bigger problems3Scan for outdated or missing drivers - takes under a minuteFortis’s Flieger F-39 and F-41 Werk 7 are limited-edition black pilot watches with the same advertised automatic movement, 70-hour power reserve and 200 m water resistance. The documented difference is size: the F-39 has a 39 mm case, while the F-41 measures 41 mm. Fortis displayed both at CHF 3,750 when its product pages were checked on October 8, 2026.
What’s different between the Fortis Flieger F-39 and F-41?
The case diameter is the most visible distinction, but the F-41 is also longer lug to lug and heavier. Both have the same listed height, movement specification, water resistance and edition limit.
| Specification | Flieger F-39 Werk 7 | Flieger F-41 Werk 7 |
|---|---|---|
| Fortis reference | F4220028 | F4220030 |
| Case diameter | 39 mm | 41 mm |
| Lug to lug | 50 mm | 52 mm |
| Height | 12.5 mm | 12.5 mm |
| Watch-head weight | 79 g | 86 g |
| Water resistance | 200 m / 600 ft / 20 atm | 200 m / 600 ft / 20 atm |
| Movement | Automatic Manufacture Calibre Werk 7; date; 70-hour power reserve | Automatic Manufacture Calibre Werk 7; date; 70-hour power reserve |
| Edition limit | 100 pieces | 100 pieces |
| Displayed price | CHF 3,750 on Fortis’s product page, checked October 8, 2026 | CHF 3,750 on Fortis’s product page, checked October 8, 2026 |
All specifications and listing details in the table come from Fortis’s F-39 Werk 7 product page and F-41 Werk 7 product page. The price is a dynamic listing, not a dated launch price or confirmation that either model remains in stock.
What do both watches share?
Fortis lists recycled stainless-steel cases with Dianoir DLC coating, matte black dials, orange Synchroline accents and green-glowing Super-LumiNova X1. Each has a bidirectional 12-hour bezel marked in half-hour increments, a screw-down crown, a smoked-sapphire case back and sapphire crystal with anti-reflective coating on both sides.
#1 Best Overall
- 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.
The supplied strap combines an FKM rubber underside with a textile upper surface and uses a screw-pin mounting system. Fortis says the F-39 package includes a reversible screwdriver for strap changes. Confirm exact reference compatibility before buying a replacement strap.
What does the Werk 7 movement offer?
Fortis specifies an automatic Manufacture Calibre Werk 7 with a date display and a 70-hour power reserve in both sizes. The manufacturer describes variable-inertia regulation, double fixation of the balance and an oversized bridge. Its phrases about “unparalleled accuracy” and “unrivaled resilience” are promotional claims; the listed specifications do not establish independent accuracy or durability results.
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
Which size should you choose?
The F-39 has a 2 mm smaller diameter, 2 mm shorter lug-to-lug measurement and is 7 g lighter at the watch head. Those figures give a practical basis for comparing the cases, but they do not establish which will fit a particular wrist better. If possible, compare both on wrist; otherwise, consider the 50 mm versus 52 mm lug-to-lug measurement as well as diameter.
Independent reader supportYour contribution helps us test, update, and keep practical guides available for everyone.Price, edition and warranty details
Fortis listed each model as limited to 100 pieces and displayed a price of CHF 3,750 for each on October 8, 2026. Both pages also listed a five-year manufacturer warranty. These are current product-page details, not evidence of remaining stock or a guaranteed future price.
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Quick Recap
Best Value
- 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.
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.
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.
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.
