Technical Archive

Fortis
Cosmonaut 623.18.71— lug 20mm

Fortis Cosmonaut 623.18.71: cinturini 20mm artigianali in cuoio, alligatore e gomma. Compatibilità tecnica garantita.

Spacematic Pilot Professional PVD — orologio

Artisanal Note

"This model requires a precise 20mm lug width to preserve the original sartorial balance."

Technical Specifications

Fortis 623.18.71
Lug Width
20 mm

The essential strap measurement.

Browse 20mm straps →
Reference

623.18.71

Movement

ETA caliber 2836-2 Hours, Minutes, Seconds | Date, Day

The Heritage

Crafted with meticulous attention to detail, these premium leather straps are the perfect accessory to complement the iconic Fortis Cosmonaut 623.18.71 watch.

Compatible Straps

Selected for 20mm lug width

Cinturino Velcro® Blue Ecru

Velcro® Strap Blue Ecru

Blue and rope. Sea and beach. White sail against blue sky. There are contrasts that exi...

Discover
Cinturino militare in pelle di vitello marrone scuro 20-22mm, senza cuciture, Made in Italy — Milano Straps

Dark Brown Calfskin Military Strap

For a Submariner, you need a strap that can withstand water and time. For a military wa...

Discover
Cinturino pelle vitello martellata giallo con cuciture ecru — fatto a mano, Milano Straps

Hammered Yellow Strap with Ecru Stitching

Yellow doesn't ask permission. It's like that on the strap, and it's like that on the w...

Discover
Cinturino in pelle Epsom cognac con cucitura ecru — disponibile in 20mm, 22mm e 24mm — Milano Straps

Cognac Epsom Leather Strap

Epsom leather is unparalleled. Its heat-embossed grain resists scratches, maintains its...

Discover
Cinturino pelle vintage marrone scuro lavorato a mano, disponibile da 18mm a 24mm — Milano Straps

Dark Brown Vintage Leather Strap

Vintage leather is not invented. It is achieved through a handmade process that leaves ...

Discover
Cinturino NATO militare nylon riciclato verde scuro con bordi arancio 20-22mm — Milano Straps MS Lab

Dark Green Military NATO Strap

Military green isn't for everyone. It demands a conscious choice – of style, material, ...

Discover
Cinturino orologio militare verde due pezzi in tessuto eco-friendly — Milano Straps

Military Two-Piece Eco-Friendly Military Green Strap

Military green isn't for everyone. It's a deliberate, almost declarative choice — those...

Discover
Cinturino alligatore autentico nero con fodera caucciù naturale 120/75mm — Milano Straps

Alligator and Black Rubber Strap

Two materials that shouldn't go together. Yet they work—because they are treated with t...

Discover
Cinturino caucciù nero saffiano 6mm con fodera in caoutchouc naturale e quick-release — Milano Straps

Black Saffiano Rubber Strap

Under your fingers, you first feel the texture—that fine, regular saffiano grid that le...

Discover
Cinturino in pelle di vitello italiano color oliva con cucitura ecru — Milano Straps

Olive Calfskin Strap

Olive green doesn't seek approval. It's a color that knows its place—sober, earthy, cap...

Discover
See all 20mm straps →

Altri Fortis — trova il cinturino

More Fortis20mm strapsUniversal spring barsWatch Archive