Strap for Divers Sixty-Five 42 Stainless Steel / Green / Calf

The lug width of the Divers 65 in this specific configuration is 21mm. This measurement represents the distance between the metal pins that connect the strap to the case. To verify compatibility with an existing strap, measure the pin with a digital calliper: a tolerance of ±0.2mm is acceptable, but forcing a strap of significantly different width is inadvisable as it may compromise the structural integrity of the lugs.

The choice depends on balancing aesthetics with function. For intensive sporting use or diving in marine environments, we recommend vulcanised rubber or NATO-style synthetic material resistant to saltwater. For transitioning between underwater context and semi-formal situations, an alligator strap with vegetable tanning or shell cordovan offers elegance without compromising the technical identity of the model. A vegetable-tanned calf leather strap represents an excellent compromise between practicality and aesthetic versatility.

The process requires extreme care to avoid damaging the lugs. Position the watch on a soft surface (microfibre cloth) with the case facing downwards. Use a dedicated pin removal tool—never screwdrivers or sharp objects—inserting it gently beneath the pin to be removed. Apply progressive and consistent pressure until extraction. Check that the pins are not bent. Repeat the procedure for the opposite side. Insert the pins into the new strap, verifying lug alignment before fully pushing the pin into position. If you do not have the appropriate tools, consult a specialised atelier such as Casati Milano to avoid costly damage.

Yes, a 21mm aftermarket strap is completely compatible with this specific reference. However, construction quality varies considerably: straps from recognised brands guarantee precision in width, material quality and solidity of finishes, particularly in contact zones with the case. A bespoke handcrafted strap furthermore permits complete personalisation (leather type, colour palette, buckle type, hole positioning), adapting perfectly to your usage patterns and aesthetic preferences.

Lifespan depends on tanning type, frequency of use and environmental conditions. A vegetable-tanned leather strap, with moderate use and appropriate maintenance (periodic cleaning, drying after water exposure, conditioning with specific oils), lasts an average of 2-4 years. Frequent exposure to saltwater or significant temperature fluctuations accelerates deterioration. Vulcanised rubber and synthetic materials show superior resilience in humid environments, with potential lifespan of 5-7 years if subjected to regular maintenance. NATO-style straps in Cordura canvas possess extremely long lifespan (exceeding 10 years) but require greater attention to cleaning to prevent moisture accumulation.