Strap for Diver Quartz GMT Black - Red / Calf

The lug width (misura ansa) of the Formex Diver 2100.3.2072.216 is 22mm. This measurement is taken between the metal spring bar pins that connect the strap lugs to the case. A ruler positioned perpendicularly will confirm the exact distance. A 22mm width is the standard specification for diving watches in this dimensional category and provides access to extensive compatible strap catalogues.

Selection depends on intended use and personal preference. For daily formal wear: alligator or shell cordovan leather in vegetable tanning. For frequent diving: NATO strap in recycled fibres or vulcanised FKM rubber. For practicality and versatility: dark blue or black NATO, which offers complete water resistance and chromatic personality without compromising function. Rubber is the radical choice for professionals who accept no compromise between performance and maintenance.

Obtain a small flat-head screwdriver and a leather or felt cushion to protect the case. Position the watch with the lug side facing upwards. Locate the small side holes where the metal spring bar pins are inserted. Insert the screwdriver into the lower hole and push inward, lifting the pin. Remove the old strap. Align the holes of the new strap with the pins, lower the first side and press the opposite end until you hear a click. Repeat for the other lug. Verify stability before wearing.

Yes, absolutely. The Formex Diver 2100.3.2072.216 accepts any strap with a 22mm lug width. Certified quality aftermarket straps (vegetable-tanned leather, Oeko-Tex textile NATO, FKM rubber) guarantee complete mechanical compatibility and often surpass OEM materials in artisanal craftsmanship and durability. Verify that the strap features thickness consistent with case robustness (minimum 3.5–4mm recommended) and that the passants fit correctly without excessive stiffness.

The lifespan of a leather strap depends on tanning quality, usage patterns and water exposure. An alligator or shell cordovan strap in vegetable tanning, worn daily in temperate climate and subject to periodic maintenance (cleaning with damp cloth, treatment with natural balm every 3–4 months), maintains structural integrity for 5–7 years. Prolonged water exposure (regular diving, daily showers) reduces lifespan to 2–3 years. The patina naturally developed by genuine leather during this period is a desirable characteristic, not a defect, and testifies to authentic watch use.