Fortis B-42 Official Cosmonauts Chronograph

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B-42 Official Cosmonauts Chronograph is a space chronograph by Fortis.

Successor of the model classic Fortis Official Cosmonauts Chronograph, with enlarged case of 42 mm diameter.

Since the beginning of the European-Russian space mission 1994, for the cosmonauts and astronauts an extraordinary ceremony takes place before their start into orbit. Because of its reliability, the crew receives the Fortis automatic chronograph as an official piece of equipment. The automatic chronograph movement is wound by the kinetic energy of the bearer and so ensures the independence of battery power - a mechanism that allows a precise measurement of time in emergency situations. With the embossing of their official emblems on the caseback, the Russian Space Agency and the Training Center Star City confirm the good quality of the chronographs.


638.10.11 L with black leather strap
638.10.11 M with steel bracelet Professional brushed
638.10.11 K with rubber strap black


Self-winding chronograph movement Valjoux 7750, 28,800 A/h
25 jewels
Precision regulation, Incabloc shock protection
Power reserve 50 h


Stainless steel, brushed
Ø 42.0 mm, H 15 mm
Unidirectional rotating black bezel (60s graduation) with 60 minutes scale
Raised dial with tachymeter scale
Sapphire crystal with anti-glare treatment on both sides
Steel caseback, screwed
Caseback embossing with the emblems of the space institutions
Waterproof to 200 m


Hours, minutes, small seconds
Day of week, date
Hacking seconds
Chrono function
Triangles to illustrate the direction of crown rotation for the quick adjustment of all functions


Luminous numerals, indices, hands with Superluminova


Stainless steel bracelet with folding clasp
Optional: leather strap with tang-type buckle or rubber strap with folding clasp


Official Cosmonauts Set: Since 1994, the set is part of the official equipment of the cosmonauts. The high-quality leather set bears the official emblems on the obverse.
Set of equipment: watch with steel bracelet, leather strap, Velcro or rubber strap, special tool to change as well as a metal box for storage of accessories.


2 years