Fortis Cosmonaut Official Cosmonauts Chronograph Monolith
Reference 638.18.31
About this watch
The Fortis 638.18.31 is a robust tool that combines functionality, style, and a sprinkle of space adventure. This Swiss brand has carved out a niche for itself in the universe of aviation and space watches, so it’s no surprise that they’ve been the official timekeeper for astronauts. The watch features a sleek black PVD coating, Arabic numeral indexes, and stick hands ensuring readability. It's powered by the ETA caliber 7750, an automatic movement renowned for its reliability and precision. With a water resistance of 200 meters, this watch is more than capable of handling aquatic adventures. Its closed back adds a touch of mystery to the watch, allowing the external beauty to shine without revealing too much inside. The Fortis 638.18.31 features a lug width of 20 mm, making it versatile enough for both adventurous outings and formal occasions.
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Key Features
- Automatic ETA movement with 25 jewels and 42-hour power reserve
- 200m water resistance for aquatic adventures
- Rotating bezel with 0-60 scale for tracking elapsed time underwater
- Black PVD coating for a sleek, modern look
- Arabic numeral indexes and stick hands for readability
- Robust and durable design for everyday wear
Specifications
- Brand
- Fortis
- Family
- Cosmonaut
- Model
- Official Cosmonauts Chronograph Monolith
- Reference
- 638.18.31
- Movement
- 7750
- Movement Features
-
- Hours, Minutes, Small Seconds
- Date, Day
- Chronograph
- Case
- Stainless Steel 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](https://external-preview.redd.it/i3hKHQV2ZxzuyA4siJal1Jc7xL029lZaZMgola9FHS4.jpeg?auto=webp&s=59c484bbbb19eaca0f8ddcc08993b78eb9e0365a)
Vintage Fortis 610.22.158.1 Official Cosmonauts Blue Fume Dial Automatic Watch - $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
![[WTS] Fortis Cosmonauts Chronograph 602.22.142 Extras $1790](https://external-preview.redd.it/XW4CUGQwNgqHlfNE6H07YZyEvc3kPFkPMuu4qoKx6FQ.jpeg?auto=webp&s=c2ce32cf5db9bf2bf13912ca4cc8f8602df14a87)
Fortis Cosmonauts Chronograph 602.22.142 Extras $1790
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
![[WTS] Fortis Cosmonauts Chronograph 602.22.142 Extras $1800](https://preview.redd.it/92s2406nkw5f1.jpg?width=640&crop=smart&auto=webp&s=f9be2cbbd5138234438f6a575c82efee07eeb996)
Fortis Cosmonauts Chronograph 602.22.142 Extras $1800
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