Pilot watches: history, features and Swiss brands

What is a pilot watch?

A pilot watch is a wristwatch built to help someone fly an aircraft. Its first job is to be read in a split second, in poor light, with gloves on and a lot going on in the cockpit. That is why most pilot watches share a few clear traits: a large case, a black dial with big white numerals, bright luminous hands, and an oversized crown you can grip easily.

Beyond that basic look, the type covers several branches. There are simple three-hand watches in the style of the German observation watch, chronographs for timing legs of a flight, navigation watches with slide rules on the bezel, and GMT watches that show a second time zone for long-haul crews. Many are also built to resist magnetism, because cockpits are full of instruments and electrics.

Pilot watches overlap with military watches and chronographs. The difference is purpose: a military field watch is made for soldiers on the ground, and a general chronograph may be made for racing or daily use. A pilot watch puts legibility and in-flight functions first.

History of the pilot watch

The story starts in the very first years of powered flight. In Paris, the Brazilian aviator Alberto Santos-Dumont asked his friend, the jeweler Louis Cartier, for a watch he could read without taking his hands off the controls. The result, in 1904, was the Santos, one of the earliest men's wristwatches.

Swiss makers soon followed. On July 25, 1909, Louis Blériot became the first person to fly across the English Channel, from Calais to Dover in about 40 minutes. He wore a Zenith watch, and in 1912 he praised it in writing for its precision.

Longines became closely tied to flight in the 1920s and 1930s. It supplied watches to the Fédération Aéronautique Internationale (FAI) from 1919. US Navy officer Philip Van Horn Weems, a navigation teacher, worked with Longines on a watch whose seconds could be synchronized with radio time signals without moving the hour and minute hands. He filed the patent in 1929. After Charles Lindbergh's solo flight across the Atlantic in 1927, Lindbergh developed the idea further, and in 1931 Longines produced the Lindbergh Hour Angle Watch. Its rotating bezel and dial helped a navigator work out longitude from the sun and a sextant reading. In 1935 the US Army ordered A-7 navigation watches through Longines' American agent, Wittnauer.

In 1936 IWC in Schaffhausen launched its Special Pilot's Watch, ref. 436, a 38 mm watch with an antimagnetic movement that kept working over a wide range of temperatures. In 1940 IWC built the Big Pilot's Watch, ref. 431, to the German air force specification for the Beobachtungsuhr or B-Uhr (observation watch). It measured 55 mm, weighed 183 grams, used the calibre 52 T.S.C., and only about 1,000 were made. The B-Uhr was also supplied by German makers such as A. Lange & Söhne, Laco, Stowa and Wempe.

Other Swiss brands built aviation tools in the same years. Oris introduced its Big Crown Pointer Date in 1938, with an oversized crown that pilots could turn while wearing gloves. Breitling patented a circular slide-rule chronograph in 1941 and released it in 1942 as the Chronomat (see our Breitling guide). Heuer had used the name Autavia since 1933 for dashboard timers meant for cars and aircraft.

After the Second World War, IWC delivered the Mark 11 navigator's watch from 1948. It was used by the British Royal Air Force and other air forces for decades, and Jaeger-LeCoultre also made Mark 11 watches. In France, the military issued a specification for the Type 20 chronograph with a flyback function, a solid power reserve and good accuracy. Breguet and Vixa supplied Type 20 watches from 1950, and Breguet sold civilian versions as the Type XX from 1954 to 1970.

The 1950s brought the jet age and long-haul flights. Glycine launched the Airman in 1953 with a 24-hour dial, and it became popular with American pilots in the Korean and Vietnam wars. In 1954 Rolex introduced the GMT-Master, ref. 6542, developed with Pan Am crews in mind so they could track two time zones on transatlantic routes. The same year Breitling made the Navitimer for members of the Aircraft Owners and Pilots Association (AOPA), with the AOPA logo on the dial and a slide rule on the bezel for speed, distance and fuel sums. It went on general sale soon after. In 1962 astronaut Scott Carpenter wore a 24-hour Navitimer in space.

The 1960s added more variety. Heuer's Autavia wrist chronograph arrived in 1962 with a rotating bezel. Omega released the Flightmaster in 1969, a large chronograph with a second time zone. In 1969 Breitling, Heuer and Hamilton, with Dubois-Depraz, presented one of the first automatic chronograph movements, used in the Navitimer and Autavia.

The quartz crisis of the 1970s and 1980s hit Swiss mechanical watchmaking hard, and cockpit electronics took over many tasks once done on the wrist. Pilot watches survived as tools and as a style. Quartz brought new ideas, such as Omega's Speedmaster X-33 and Breitling's Emergency of 1995, which carried a small distress transmitter on 121.5 MHz. In 2002 IWC brought back the Big Pilot in a 46 mm case with an in-house movement, and the design-led revival has continued since. Even Patek Philippe added a Calatrava Pilot Travel Time in 2015.

• 1904 – Cartier makes the Santos for aviator Alberto Santos-Dumont (context).
• 1909 – Louis Blériot crosses the Channel wearing a Zenith.
• 1931 – Longines Lindbergh Hour Angle Watch.
• 1936 – IWC Special Pilot's Watch.
• 1940 – IWC Big Pilot's Watch, built to the B-Uhr specification.
• 1942 – Breitling Chronomat with circular slide rule.
• 1948 – IWC Mark 11 for the Royal Air Force.
• 1953 – Glycine Airman with 24-hour dial.
• 1954 – Rolex GMT-Master and Breitling Navitimer.
• 1995 – Breitling Emergency with distress beacon.
• 2002 – IWC revives the Big Pilot.

Features and technology

Legibility. The core of any pilot watch is a high-contrast dial, usually black with white Arabic numerals and luminous hands. The B-Uhr style often has a triangle with two dots at 12 o'clock so you can orient the watch at a glance.

Crown and case. A large, often onion- or cone-shaped crown is easier to use with gloves. Cases are often big, from about 40 mm up to 46 mm in modern pieces and 55 mm for the wartime B-Uhr. A sapphire crystal secured against sudden pressure drops is common on modern models.

Antimagnetic protection. Magnetic fields can make a mechanical watch run fast or stop. The international standard ISO 764 asks for resistance to 4,800 A/m. Many pilot watches go further with a soft-iron inner cage around the movement; the 2002 IWC Big Pilot was rated at 32,000 A/m.

Chronograph and flyback. A chronograph lets a pilot time a leg of a flight or a fuel burn. A flyback (retour en vol) lets you reset and restart the chronograph with one push, which was a key requirement of the French Type 20.

Slide rule. A rotating bezel with logarithmic scales, as on the Navitimer, turns the watch into a flight computer for speed, distance, fuel and unit conversions.

GMT and 24-hour displays. An extra hour hand that turns once in 24 hours, often with a 24-hour bezel, shows home time or UTC (Zulu time). Some watches, such as the Glycine Airman, use a 24-hour main dial.

Hacking seconds. Many pilot watches stop the seconds hand when you pull the crown, so you can set the time exactly to a time signal.

Famous Swiss pilot watch models

• Zenith pilot watches (1909 onward) – Linked to Blériot's Channel crossing; today's Pilot collection builds on this history.
• Longines Lindbergh Hour Angle Watch (1931) – A true navigation instrument for finding longitude, still made as a heritage piece.
• Longines Weems Second-Setting Watch – Allowed exact synchronization of the seconds with radio time signals.
• IWC Special Pilot's Watch (1936) – IWC's first pilot's watch, antimagnetic and built for changing temperatures.
• IWC Big Pilot's Watch (1940) – The 55 mm B-Uhr that defined the classic flieger design.
• Oris Big Crown Pointer Date (1938) – Large crown for gloved hands and a pointer date hand.
• Breitling Chronomat (1942) – Brought the circular slide rule to the wrist.
• IWC Mark 11 (1948) – Navigator's watch used by the Royal Air Force for decades.
• Breguet Type XX (1954) – Civilian version of the French military flyback chronograph.
• Glycine Airman (1953) – 24-hour dial for tracking two time zones, popular with US pilots.
• Rolex GMT-Master (1954) – Two-time-zone watch developed with Pan Am crews in mind.
• Breitling Navitimer (1954) – Slide-rule chronograph made first for AOPA members.
• Heuer Autavia (1962) – Chronograph with rotating bezel, named for automobile and aviation use.
• Omega Flightmaster (1969) – Large chronograph with a second time zone.
• Breitling Emergency (1995) – A watch with a built-in distress transmitter.

Pilot watches on the pre-owned market

Brand, reference, condition and originality drive value, but with pilot watches a few points matter even more.

Military provenance. Watches issued to air forces, such as the IWC Mark 11 or French Type 20 chronographs, are sought after when the issue markings, case backs and papers can be matched to records. Unmarked or civilian versions are usually worth less than proven military pieces, and fake military engravings exist.

Original dials and hands. Many vintage pilot watches had radium or tritium lume. Replaced dials, relumed hands and refinished cases lower value sharply.

Early and rare references. First series, such as early Navitimers with the AOPA logo or the first GMT-Master ref. 6542 with its fragile Bakelite bezel, attract strong interest. At Phillips' Geneva Watch Auction: EIGHT in November 2018, a Rolex GMT-Master ref. 6542 sold for CHF 137,500. Modern pilot watches from big brands trade closer to their retail price, with value driven by condition, box and papers, and service history.

Quartz and special pieces. Some quartz pilot watches have their own following. At Phillips in Hong Kong in May 2023, an Omega X-33 Flightmaster prototype from around 1996 sold for HK$82,550.

What to check before buying or selling

• Bezel function. On slide-rule and GMT watches, check that the bezel turns smoothly, clicks where it should, and that the scales line up with the dial.
• Chronograph and flyback. Start, stop and reset several times. On a flyback, push reset while the chronograph runs; the hands should snap back to zero and restart cleanly.
• GMT hand. Set the second time zone and check it jumps or moves correctly and stays aligned with the hour markers.
• Dial and lume. Look for replaced dials, re-printed numerals and relumed hands that do not match. Old radium lume should be handled with care.
• Military markings. Compare case-back engravings with known references and serial ranges. Ask for documents when a seller claims air-force service.
• Magnetism and accuracy. A watch that suddenly runs very fast may be magnetized; a watchmaker can test and fix this quickly.
• Service and parts. Ask when the watch was last serviced and whether original parts were kept.

Popular models like the Navitimer, Big Pilot and GMT-Master are widely copied. Read our guide on how to spot a fake watch before you pay or ship.

What is your pilot watch worth?

If you want a first idea of value, upload a few photos for our free watch value estimate. For estates, insurance or a pilot watch with a military history to document, you can order a written watch appraisal.

Swiss pilot watches brands A–Z

23 Swiss brands with pilot watches in their current or historic range. Click a brand for its full history and value guide.

• Alpina – Startimer Pilot
• Ball Watch – Engineer Master II Aviator
• Blancpain – Air Command
• Breguet – Type XX, Type XXI, Type 20
• Breitling – Navitimer, Chronomat, Aerospace, Emergency
• Fortis – Flieger
• Glycine – Airman
• Hamilton – Khaki Aviation, Khaki Pilot, Khaki Pilot Pioneer
• IWC Schaffhausen – Big Pilot's Watch, Pilot's Watch Mark XX, Pilot's Watch Chronograph, Spitfire, Top Gun
• Jaeger-LeCoultre – Mark 11
• Longines – Lindbergh Hour Angle Watch, Weems Second-Setting Watch, Spirit, Spirit Zulu Time
• Luminox – P-38 Lightning, F-117 Nighthawk
• Mathey-Tissot – Type 20
• Omega – Flightmaster, Speedmaster X-33
• Oris – Big Crown Pointer Date, Big Crown ProPilot, ProPilot X
• Patek Philippe – Calatrava Pilot Travel Time
• Revue Thommen – Airspeed
• Rolex – GMT-Master II, Air-King
• TAG Heuer – Autavia
• Universal Genève – Aero-Compax
• Victorinox – AirBoss
• Zenith – Pilot Type 20, Pilot Big Date Flyback
• Zodiac – Aerospace GMT

Other watch types

• Dive watches
• Dress watches
• Chronographs
• Military watches
• Sports watches
• Jewelry watches
• Skeleton watches

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