Fortis Cosmonaut Official Cosmonauts Chronograph Mars 500

Reference 638.28.13

About this watch

The Fortis Cosmonaut 638.28.13 is a testament to human ingenuity, inspired by the great beyond. This watch embodies the spirit of exploration, crafted with utmost attention to detail and functionality. The ETA Caliber 7750 movement ensures reliability and precision, while the titanium case provides durability and comfort. With a water resistance of 200 meters, this watch can handle swimming, snorkeling, and diving. The chronograph feature allows for timing events or tracking workouts, making it a great companion for outdoor enthusiasts and adventurers alike. Whether you're an avid diver or a casual adventurer, the Fortis Mars 500 is a versatile timepiece that combines ruggedness, precision, and a nod to the cosmos.
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Key Features

  • ETA Caliber 7750 Automatic Movement
  • Sturdy Titanium Case with PVD Coating
  • 200m Water Resistance
  • Rotating 0-60 Dive Bezel
  • Black Dial with Arabic Numerals and Luminescent Hands
  • 42mm Diameter, 15.5mm Height

Specifications

Brand
Fortis
Family
Cosmonaut
Model
Official Cosmonauts Chronograph Mars 500
Reference
638.28.13
Movement
7750
Movement Features
  • Hours, Minutes, Small Seconds
  • Date, Day
  • Chronograph
Case
42mm
Dial Color
Black
Crystal
Sapphire
Water Resistance
200

Current Listings

[WTS] Vintage Fortis 610.22.158.1 Official Cosmonauts Blue Fume Dial Automatic Watch - $695

Vintage Fortis 610.22.158.1 Official Cosmonauts Blue Fume Dial Automatic Watch - $695

Fortis - 610.22.158.1 · $695
This Vintage Fortis 610.22.158.1 Official Cosmonauts Watch features a Mechanical (Automatic) movement and comes with a Fortis leather strap. The watch has been recently serviced, with some scratching on the Anti-Reflection coating of the crystal.

  • Condition: Used
  • Movement type: Mechanical (Automatic)
  • Straps: Fortis leather
  • Box: Generic
Posted at
Jun 18, 2025, 9:47 PM
Active
[WTS] Fortis Cosmonauts Chronograph 602.22.142 Extras $1790

Fortis Cosmonauts Chronograph 602.22.142 Extras $1790

Fortis - 602.22.142 · $1,790
A Fortis Cosmonauts Chronograph, issued for the Russian Cosmonauts Agency, featuring a Lemania 5100 chronograph movement and a sandblasted stainless steel case. The watch has a black matte dial with cream roman numerals and tritium lume.

  • Condition: great condition, signs of wear but no deep dings or scratches
  • Case dimensions: 38mm diameter, 20mm lug width, 46mm lug-to-lug, 13.75mm thickness
  • Movement type: Lemania 5100 chronograph movement
  • Strap material: brand new light brown 20mm genuine leather made by Fluco
Posted at
Jun 16, 2025, 9:37 AM
Active
[WTS] Fortis Cosmonauts Chronograph 602.22.142 Extras $1800

Fortis Cosmonauts Chronograph 602.22.142 Extras $1800

Fortis - 602.22.142 · $1,800
A Fortis Cosmonauts Chronograph with a sandblasted stainless steel case and a black matte dial, powered by the Lemania 5100 chronograph movement.

  • Condition: Great condition
  • Case Dimensions: 38mm diameter, 46mm lug-to-lug, 13.75mm thickness
  • Lug Width: 20mm
  • Movement: Lemania 5100 chronograph movement
Posted at
Jun 9, 2025, 9:23 AM
Active