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Fortis B-42 Chronograph

Higher, faster, further: for a long time now Fortis have refused to be limited by earthly boundaries and have been inspiring people with functional watches for aviation and outer space. Discover the Fortis B-42!  More

Fortis B-42 Chronograph
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Buy affordable Fortis B-42 watches online


The Swiss manufacturer Fortis stands for robust and practical luxury watches that withstand the pressure of the most stressful situations without fail. For example, the Fortis B-42 Chronograph and the B-42 Pilot are excellent examples of these attributes. While the B-42 Chronograph has enabled the Russian cosmonauts of Roscosmos to conquer space for 25 years, the B-42 Pilot is an indispensable tool for pilots who operate within Earth's atmosphere. If you are looking for a watch that will help you easily master the challenges of adventures away from everyday life, we highly recommend that you buy a Fortis B-42.



Technical and visual features of the B-42


The name B-42 seems quite simple, but it is fact made up of two rather technical details. The “B” stands for “Beobachtungsuhr”, which is German for observation watch, and the “42” simply represents the diameter of the case.

Naturally, both the B-42 Chronograph and the B-42 Pilot are chronographs. Furthermore, both series include functional tool watches with cases made of brushed stainless steel. These are water-resistant up to 200 metres and have excellent readability. In particular the Ref. 638.10.11.M (B-42 Chronograph) and Ref. 635.10.11.M (B-42 Pilot) models show such a clear family connection that it is only possible to distinguish the two watches through the bezel. In contrast to the B-42 Pilot, the B-42 Chronograph has a bidirectional rotating bezel, while the Pilot's bezel just features a fixed stainless steel bezel.

The chronograph pushers and crown on the B-42 are remarkably large, making it easy to use with gloves. In the past, Fortis used the reliable automatic Valjoux 7750 calibre for these models, but now uses its own calibre UW-50 in new B-42 models. Nevertheless, not much has changed performance wise as both calibres operate the same functions and have a power reserve of 48 hours. Elsewhere, the watches in the B-42 series demonstrate their efficiency through a variety of complications. For example, date and weekday displays combine to great effect with the high-precision chronograph.

Fortis also gives the wearer plenty of choice in terms of the bracelet. From stainless steel, calf leather or rubber strap with a pin buckle or safety folding clasp – even Nato straps are available for the B-42, so that the watch can be adjusted to your personal taste.



Overview of Fortis B-42 models and prices



  • The B-42 Chronograph Alarm (Ref. 639.22.170) is a mechanical masterpiece of haute horlogerie. For this timepiece, the Valjoux 7750 movement used inside was modified to have an alarm function instead of the weekday complication. This can be activated with the pusher at 8 o'clock and can be set using an additional hand above the crown. Here the space used for the weekday window on other models indicates whether the alarm clock is active via a coloured mark next to the date at 3 o'clock. When the time comes for the alarm to go off, the sound spring produces the alarm tone. When sleeping, the watch should be put down on a flat surface, as this will provide the loudest possible alarm tone. This fascinating observation watch from Fortis is available at Watchmaster for a price of €6,250. From around €100 per month, you can also finance this Fortis B-42 Chronograph.

  • The B-42 Pilot Professional (Ref. 635.10.11.L 08) has an entirely different appearance. This model is unmistakably a classic pilot's watch and the reliable Valjoux 7750 is hard at work inside. Since this model does not make use of a modified movement, there is a weekday display next to the date window. The brown leather strap matches perfectly with the black of the dial and the brushed stainless steel of the case, which makes this model a versatile everyday companion.

  • The B-42 Stratoliner Chronograph (Ref. 665.10.71 K) is a chronograph in the classic sense with a black dial, white totalisers, a black rubber strap and a tachymeter scale on the bezel. Another notable feature of the Fortis B-42 Chronograph can also be found on this model: the emblem of the Russian space agency is engraved on the case back.

  • The B-42 Aeromaster Dusk (Ref. 656.18.98.LP) is sporty and elegant in its appearance. This automatic calibre chronograph has a well-balanced 42 mm stainless steel case and is attached to the wrist by a leather strap. The bronze-coloured dial is a distinctive feature of this model, which makes this B-42 stand out from the crowd. For a model from 2020 including the original box and papers, all you have to pay is €2,400.



Other interesting series from Fortis


  • Like looking into the future: the exciting Spaceleader Chronograph is a breath of fresh air in the chronograph range. With this model on your wrist, nothing and nobody can stop you.

  • As the name already suggests, the Terrestis Hedonist allows its wearers to channel earthly happiness and joy by simply wearing it. The watches in the Fortis Terrestis Hedonist convince with their classic elegance and simplicity and are the perfect dress watch.

  • The Flieger Chronograph series focuses on what constitutes a classic pilot's watch. The resulting timepieces offer clear lines and an extremely high level of functionality. In addition, the prominent chronograph pushers and the equally large crown make it extremely easy to use.

  • The Fortis Cockpit One is a touch more elegant and much more delicate, but still has a sporty feel. From three-hand models with day-date function or as chronographs, the models in this collection know how to present themselves and, like the Terrestis Hedonist, focus more on delivering elegance than robustness.


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