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Fortis

Fortis B-42 Marinemaster Cosmonaut Day/Date Ref 647.10.158.3

$1,400.00
Shipping calculated at checkout.

The Fortis B-42 Marinemaster Cosmonaut Day/Date Ref. 647.10.158.3 is a robust professional tool watch that embodies Fortis’ long-standing partnership with space exploration and extreme environments.  Built to exacting standards, the B-42 Marinemaster offers exceptional water resistance, a unidirectional diving bezel, and the proven reliability expected from a watch trusted by cosmonauts and military professionals alike—making it a purposeful blend of aerospace heritage, diving capability, and no-nonsense Swiss engineering.
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  • The History:

Fortis is one of the few watchmakers in the world that remains, to this day, an independent company with a rich history in Swiss watchmaking. Fortis was founded in 1912 by Walter Vogt. In 1926, Fortis, in collaboration with watch inventor John Harwood, introduced the first automatic watch to go into production, thereby setting the stage for the emergence of major brands on the market today, such as Rolex, Omega, and others. Later, in 1940, Fortis pioneered the way for one of the first water-resistant watches ever built.

  • The Watch:

The Fortis B-42 Marinemaster Cosmonaut Day/Date Ref 647.10.158.3 features a 42mm stainless steel case with a sapphire crystal and a unidirectional rotating bezel.  The black dial features large lumed Arabic numerals, a 24-hour scale on the rehaut, lumed hour and minute hands, an orange lollipop-style seconds hand, and day and date windows at the 3 o’clock position.  Powered by an ETA 2836-2 automatic movement, the Cosmonaut Day/Date has a 200-meter water resistance rating.

  • The Details:

Included with this timepiece is the original stainless steel Fortis bracelet and Fortis hangtag.
Specifications

Brand | Fortis

Reference | 647.10.158.3

Movement | ETA 2836-2

Model | B-42 Marinemaster Cosmonaut Day/Date

Strap | Bracelet

Crystal | Sapphire

Style | Fleiger Watches

Case Width | 42mm

Case Height | 12.3mm

Lug Width | 20mm

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