Introduction
When Time Was a Matter of Life and Death
In the high-altitude cockpits of World War II, a pilot's watch was not a luxury - it was a weapon. Navigating by dead reckoning over enemy territory, dropping a payload at precisely the right second, or timing a fuel burn with no room for error: all of it depended on a watch that could be read instantly, in a gloved hand, under the dimmest instrument lighting. The watches born from this brutal crucible are, paradoxically, among the most beautiful objects ever made.
Nearly eight decades after the last dogfight, the design language of the WWII pilot watch — the oversized crown, the matte black dial, the cathedral or baton hands filled with luminous compound, the aviation bezel, the enormous legibility — remains one of the most copied silhouettes in watchmaking. From Zermatt boutiques to Japanese microbrand studios, the Flieger lives on. This is its story.
"A pilot who cannot read his instrument panel in a fraction of a second is a dead pilot. The watch had to be designed so that time could not hide from him."
— German Luftwaffe Technical Specification, 1940Germany · The Ur-Flieger
The German B-Uhr: Where It All Began
The story of the military pilot watch is, inescapably, a German story. In 1940 the German Air Ministry (Reichsluftfahrtministerium) issued a precise specification — Beobachtungsuhren, "observation watches," shortened to B-Uhr — commissioning five watchmakers to produce cockpit-wearable precision instruments. The specification was exacting: 55mm case minimum, crown at 12 o'clock for easy winding in a glove, a large triangular marker at 12 flanked by two dots, Arabic numerals, matte black antimagnetic dial, and syringe or baton hands with luminous radium compound.
Five houses answered the call: A. Lange & Söhne, Lacher & Co. (Laco), Wempe, Walter Storz (Stowa), and IWC. Each produced watches with the same cockpit specification but slight individual character differences — variations that collectors now obsess over with religious devotion.
Laco B-Uhr — Type A "Flieger"
The Laco B-Uhr is perhaps the most recognisable surviving example of the original German specification. The dial features the quintessential layout: triangle at 12 o'clock flanked by two luminous dots, large railroad-track minute ring, and subsidiary seconds at 9 o'clock. The movement ran on lever-escapement calibres supplied by Unitas or ETA. Cases were soft-iron antimagnetic, and the massive onion crown made winding possible with gloved fingers at 30,000 feet. Laco still makes this watch today — almost unchanged — from their Pforzheim manufacture.
View Learn More About The History of Laco B-Uhr Watch →
IWC Special Watch for Pilots / Mark XI
IWC was uniquely positioned among the five B-Uhr makers because it was Swiss-based yet German-ministry approved, which is perhaps because they were based in Schauffhausen (German-speaking Switzerland), as opposed to other Swiss brands. This allowed IWC to produce watches for both the Axis Powers and the Allied Forces. Their wartime Special Watch for Pilots evolved directly into the iconic Mark XI (1948), adopted by the Royal Air Force. The Mark XI introduced the soft-iron inner cage for anti-magnetism, a feature IWC still references in their modern Pilot's Watch Mark XX. The RAF wore these into the 1980s — a testament to their extraordinary legibility and robustness.
View IWC Pilot's Collection →The Flieger Design Language
The genius of the B-Uhr specification was its ruthless functionalism. Every element served a purpose:
B-Uhr Design Specification Breakdown
| Design Element | Wartime Function | Modern Legacy |
|---|---|---|
| Large Onion Crown at 12 | Winding with gloved hands in cockpit | Retained as aesthetic signature in all modern Fliegers |
| Triangle + Two Dots at 12 | Instant 12 o'clock orientation in low light | Copied globally; Seiko, Tissot, Hamilton all use variants |
| Matte Black Dial | Anti-glare in open cockpit sunlight | Standard pilot watch palette worldwide |
| Arabic Numerals (bold) | Legibility during high-G manoeuvres | Distinguishes Flieger-style from dress-watch codes |
| Soft Iron Inner Case | Shields movement from aircraft magnetics | IWC carries this into every modern Mark series |
| Broad Arrow / Baton Hands | Max luminous surface; no confusion with minute hand | Adopted by British MoD, Smiths, Hamilton, Laco |
United Kingdom · The Broad Arrow
British Military Watches: The Broad Arrow & The W10
Britain's approach to military horology was characterised by severe utilitarianism. The Ministry of Defence (MoD) issued specifications to contracted civilian makers — Longines, Omega, Hamilton, Jaeger-LeCoultre, and domestic brand Smiths — under a programme that stamped the famous broad arrow ↑ (the "pheon") on every government-issued timepiece.
The RAF issued two primary types: the 6B series of wrist-worn pilot watches (including the IWC Mark X and XI), and the W10 general-service watch — a 38mm affair with a plain black dial, white Arabic numerals, and the broad arrow stamped on the case-back. The W10 is the grandfather of modern "field watch" aesthetics: honest, legible, and devoid of decoration. The W10 would eventually lead to the Dirty Dozen - twelve different watchmakers who were commissioned by the British Military of Defense to produce field watches for the military.

Hamilton GI & Khaki Aviation
Hamilton Watch Company — American-owned, Swiss-made — supplied hundreds of thousands of military watches to Allied forces. Their WWII-era GI watches featured stainless tonneau cases, radium-painted dials, and the dependable 987-A movement. Post-war, the Khaki Aviation line became the direct civilian descendant, maintaining the same brutal legibility. Hamilton remains one of the most worn pilot watch brands globally, with their Khaki Pilot Pioneer still echoing 1940s field-watch proportions directly.
View Hamilton Khaki Aviation →United States · The Navigation Watch
American Aviation Watches: Elgin, Bulova & The A-11
The United States Army Air Forces required a standardized field watch — and the result was the A-11 specification, one of the most consequential watch designs in American history. Contracted to Elgin, Bulova, and Waltham, the A-11 was a 30mm manual-wind watch with a black dial, white numerals, and luminous hands. It was simple, rugged, and produced in the millions.
General Dwight D. Eisenhower was photographed wearing one. American bomber crews relied on them for formation timing over Germany. The A-11 is now referred to by historians as "the watch that won the war" — hyperbole, perhaps, but it's part of what makes its lore so interesting for enthusiasts all around the world. The design principles of the A-11 are visible in virtually every field watch to this day, from Timex to Marathon.

Praesidus A-11 - Credit WatchGecko
Soviet Union · The Aviator's Companion
Soviet Pilot Watches: Sturmanskie & The Space Race Connection
The Soviet Union's contribution to aviation horology is often overlooked in Western horological writing — a significant omission. The Sturmanskie ("Navigator") was issued to Soviet Air Force pilots beginning in the late 1940s, built at the First Moscow Watch Factory. Its design was unmistakably influenced by captured German B-Uhr specifications, filtered through Soviet industrial pragmatism.
The Sturmanskie gained immortality on April 12, 1961, when Yuri Gagarin wore one on his wrist during Vostok 1 — the first human spaceflight. The watch became the first timepiece worn in outer space. Today the Sturmanskie brand has been revived and trades heavily — and correctly — on this extraordinary heritage.

Sturmanskie Gagarin - Credit Dumarko
The Sturmanskie was given to Soviet pilots not as a luxury but as a tool of the state — functional, honest, and built to outlast both the mission and the regime that commissioned it.
— Russian Horology Journal, 2019Japan · The Forgotten Pilot Watch
The Japanese Seikosha Tensoku Dokei ("Celestial Watch") : Seiko & the Zero-Sen Pilot

Here is where history becomes uncomfortable - and fascinating. Japan's Imperial Navy and Army Air Service required precise timepieces for their pilots, navigators, and bombardiers. The watches issued to IJN and IJAAF aircrews are collectively known as 天測時計 — Tensokudokei, or "celestial observation watches."
Seiko — then operating as Seikosha — supplied a significant portion of these watches, alongside Citizen (then Shokosha). The Tensokudokei were large, precisely calibrated timepieces with bold black dials, luminous Arabic numerals, and robust movements — in design philosophy startlingly similar to their German counterparts. They were worn in the cockpits of Mitsubishi A6M "Zero" fighters and Kawanishi H8K flying boats. Interestingly, due to the way that A6M Zeros were built, Japanese pilots generally wore this watch in a band around their neck, or strapped to their thigh, allowing them to check the time without having to move their hand.

Seiko TENSOKUDOKEI— IJN Pilot Issue
The surviving examples of Seikosha's WWII military pilot watches are extraordinarily rare and fiercely contested at auction. They feature large 45–50mm cases, bold black dials with white Arabic numerals at every five-minute interval, large luminous baton hands, and manual-wind movements of impressive accuracy for the era. The design language is unmistakably in the same family as the German B-Uhr — large, legible, utterly functional — and yet Seiko has never reissued this design in its modern collections. That silence, as we discuss in our conclusion, is a curious thing.
Why the TENSOKUDOKEI Remains in the Shadows
Unlike Germany — which reconciled with its wartime horological legacy through brands like Laco, Stowa, and even IWC openly celebrating their B-Uhr heritage — Japan has largely sidestepped the Tensokudokei chapter. Seiko's modern Prospex range draws on dive watch and speed timer heritage; the IJN pilot watch remains an archival footnote rather than a living product line.
Whether this reflects Japanese corporate sensitivity to wartime symbolism, or simply a market judgment about demand, is an open question — and one the watch community increasingly debates as interest in vintage Japanese military horology grows.
The Living Legacy
All Modern Brands Using the WWII Pilot Watch Design DNA
The influence of the wartime pilot watch specification is so pervasive that virtually every major and boutique watch brand has reached into that well at least once. Below is a comprehensive survey of brands actively producing pilot watches rooted in WWII design language.
| Brand | Country | WWII-Inspired Model | Design Heritage |
|---|---|---|---|
| IWC Schaffhausen | 🇨🇭 Switzerland | Pilot's Watch Mark XX | Direct descendant of B-Uhr & RAF Mark XI contract watches |
| Laco | 🇩🇪 Germany | Pilot Original Series | One of the original five B-Uhr makers; original moulds still referenced |
| Stowa | 🇩🇪 Germany | Flieger Original | Direct heir to Walter Storz's B-Uhr production, Pforzheim |
| A. Lange & Söhne | 🇩🇪 Germany | 1815 (archival reference) | Original B-Uhr contractor; repositioned post-war to luxury dress watches |
| Glycine | 🇨🇭 Switzerland | Airman Series | GMT aviation watch rooted in airline pilot specification, 1953 |
| Hamilton | 🇺🇸 USA / 🇨🇭 Swiss | Khaki Pilot Pioneer | WWII USAAF GI watch contractor; direct lineage in Khaki range |
| Longines | 🇨🇭 Switzerland | Heritage Military | British MoD contract supplier; column-wheel chronographs for RAF |
| Tissot | 🇨🇭 Switzerland | T-Touch Expert / PR50 | Swiss contractor supplying Allied forces; modern aviation aesthetics |
| Breitling | 🇨🇭 Switzerland | Navitimer, Chronomat | Post-war aviation tool watch; AOPA official timepiece from 1952 |
| Omega | 🇨🇭 Switzerland | Pilot's Watch (vintage reissue) | Supplied RAF, British Army & CXX specification watches during WWII |
| Junkers | 🇩🇪 Germany | Bauhaus / G38 | Named after the WWII aircraft manufacturer; Bauhaus-aviation aesthetic fusion |
| Zeppelin | 🇩🇪 Germany | LZ127 / LZ129 Series | German aviation heritage; Zeppelin airship era design references |
| Wempe | 🇩🇪 Germany | Aviator / Chronometre | The fifth original B-Uhr maker; Hamburg-based luxury jeweller and watchmaker |
| Seiko | 🇯🇵 Japan | SRP771 / SKX Pilots | Post-war aviation watch DNA; Tensokudokei heritage rarely cited publicly |
| Citizen | 🇯🇵 Japan | Promaster Sky | Successor to Shokosha; WWII IJAAF supply converted into civilian aviation line |
| Wancher Watch | 🇯🇵 Japan | Flugel | Boutique Japanese brand drawing on the understated precision of German aviation horology and the clean Flieger design ethic |
The Hard Question
Why Wear a Luftwaffe Watch? The Ethics of Military Heritage in Horology
It is a question serious collectors must face: the B-Uhr was commissioned by the Third Reich. Laco, Stowa, and IWC built watches under contracts signed with the Luftwaffe of a genocidal regime. When a 2024 watch enthusiast straps on a Laco Pilot Original and photographs it for Instagram, they are wearing, in almost unchanged form, the instrument worn by Heinkel He 111 bomber crews over London. Is that beautiful or disturbing? Almost certainly, it is both.
The watch community has reached a broadly shared accommodation: the design is separable from the regime. The B-Uhr specification was an act of industrial pragmatism — a brilliant solution to the problem of cockpit legibility — that predated and will outlast the political context of its creation. Germany itself has made its peace with this: Laco openly documents its 1940 origins, sells watches to a global audience, and invites buyers to appreciate the design without endorsing the politics. This is, by any reasonable measure, the correct approach.
The design of the B-Uhr did not belong to National Socialism. It belonged to the problem of reading time at altitude in a cockpit. That problem is eternal, and so the design endures — long after the ideology that commissioned it has been consigned to the historical dustbin where it belongs.
Furthermore, the post-war embrace of the Flieger aesthetic was not driven by nostalgia for the Third Reich but by the RAF's own adoption of the IWC Mark XI and similar designs. When the Royal Air Force — one of the primary victims of Luftwaffe aggression — chooses to equip its pilots with watches derived from Luftwaffe specifications, the design has been morally laundered by the most authoritative possible endorsement.
What makes this particularly interesting is how selectively the principle is applied. Germany's wartime watch design has been rehabilitated, romanticized, and made into a global phenomenon worth hundreds of millions in annual revenue. Japan's wartime watch design — the Tensokudokei — has barely been acknowledged.

Visual Survey
The Pilot Watch Across Nations: A Visual Survey

The original Flieger. Triangle marker, onion crown, railroad minutes. Luftwaffe specification, Pforzheim manufacture.
Source: laco.de →
Adopted by the RAF. Soft-iron anti-magnetic cage. The first "modern" pilot watch. IWC's DNA ever since.
Source: iwc.com →
Worn by Gagarin in space. The Soviet answer to the Flieger. Made at the First Moscow Watch Factory. First watch in orbit.
Source: sturmanskie.com →
Walter Storz's living legacy. The cleanest, most Bauhaus-pure expression of the B-Uhr. No date, no clutter — just time.
Source: stowa.de →
The understated Japanese take on the Flieger ideal. Precision, legibility, and the quiet confidence of German aviation watch lineage, reimagined for today.
Source: wancherwatch.com →
Comments
Great read! Loved every bit of it!
Great read! Loved every bit of it!