Strap for Divers Sixty-Five 40 Social Club Edition / Lausanne

The lug width is 20mm. This dimension represents the internal space between the two lugs (case attachment points) where the strap must be inserted. With a 40mm case diameter, 20mm ensures the ideal proportional balance between case mass and wrist harmony.

We recommend alligator niloticus with vegetable tanning (develops authentic patina over time), structured European calf leather for pronounced grain, or FKM rubber for recreational diving environments. NATO cotton straps (Baladeur 1.6mm) are ideal for summer rotation or post-water use. Material choice depends on intended use: leather for daily elegance, rubber/NATO for aquatic sports.

The Divers 65 features spring bar attachments. Using a dedicated strap removal tool or blunt knife tip, push the spring bar laterally to compress the internal spring, extracting the old strap. Insert the new strap ends into the lugs, ensuring the keeper (strap pass-through) thickness does not exceed 1.8mm to prevent friction with the case. Verify the strap is 20mm for perfect fit.

Yes, any strap with 20mm lug width is compatible. Critical verification: ensure the keeper thickness does not exceed 1.8mm to avoid structural strain on the spring bars. We recommend artisanal leather straps (alligator, calf, shell cordovan) or certified FKM technical rubber, maintaining quality standards coherent with the Divers 65's functional integrity.

Lifespan varies with material and usage patterns. Vegetable-tanned alligator, subjected to semi-annual conditioning (neutral non-invasive oil), lasts 8-12 years before buckle replacement becomes necessary. European calf leather, more hygroscopic, has a service life of 4-7 years in temperate climates. FKM rubber lasts 5-8 years, gradually degrading from organic solvents. Regular rotation between different straps extends the lifespan of each.