Strap for Diver Quartz GMT Black / Bracelet

The lug width (or lug distance) of the Formex 2100.3.2022.100 is 22mm. This dimension is specific to this model and must be measured precisely using a calliper between the two internal spring bar lugs of the case. Compatible straps must have exactly 22mm width to ensure secure attachment without play or excessive pressure.

For a diver of this calibre and material composition (titanium and stainless steel), straps in aged shell cordovan, thick vegetable-tanned calf, heavy canvas NATO, or FKM rubber represent the technically correct choices. Cordovan and calf favour aesthetic evolution and elegance; NATO offers vernacular robustness; rubber is the authentic solution for professional marine environments.

Strap change requires a spring bar tool or blunt-tipped implement (never use sharp tools that damage the lugs). Position the tool in the small lateral hole of the spring bar, apply gentle downward pressure to retract the internal spring, then withdraw the bar from the case. Repeat on the opposite side. Installation of the new strap is the reverse operation: insert the bars into the lugs and verify they are fully secured.

Yes, a quality aftermarket strap is the preferred choice on a technical diver like the 2100.3.2022.100. Artisanal straps of correct 22mm width offer aesthetic personalisation, comfort adapted to individual wrist anatomy, and materials often superior to originals. Verify only that the lug width is precisely 22mm and that the strap is constructed with thickness coherent to case proportions (minimum 1.8mm).

Leather strap longevity on a diver depends on usage and material. A quality cordovan resists 3-4 years with daily use in normal environments; vegetable-tanned calf lasts 2-3 years. If the diver is regularly used in saltwater, longevity reduces significantly (12-18 months): constant moisture deteriorates fibre integrity. For frequent marine use, consider FKM rubber or NATO straps as primary solutions, reserving leather for terrestrial contexts.