Strap for Divers Sixty-Five 40 Stainless Steel / Bronze / Green / Rubber

The lug width of the Oris Divers 65 01 733 7707 4357-07 4 20 18 is 20 millimetres. This dimension represents the historical standard of professional diving and requires a strap compatible with precision to ensure correct seating in the lugs of the case, without play or constraint.

The best option depends on your use: shell cordovan or vegetable tanned leather offer fascinating ageing and natural patina, ideal for those who appreciate straps that develop character over time. NATO in technical canvas is the historical and robust choice for frequent diving. FKM rubber is the most practical post-dive solution, dry at the wrist and corrosion-resistant. A crocodile leather strap ensures formal elegance with lasting comfort.

The strap change is performed by inserting a removal pin into the small lateral openings of the case (at the lugs). Push gently downward to release the internal springs, then extract the support pins. Repeat the procedure on the other side. Position the new 20mm strap in the lugs and reinsert the pins, verifying that they are fully engaged before wearing the watch. If inexperienced, rely on a professional watchmaker to avoid damage.

Yes, provided the lug width is exactly 20 millimetres. Many artisanal leather, NATO and rubber straps are available in this size on specialised platforms. Always verify that the strap is declared compatible with 20mm and that the construction quality meets professional standards, especially if you intend to wear the watch in salt water or corrosive environments.

Durability depends on the quality of the tanning and usage: a high-quality artisanal leather (shell cordovan, vegetable tanning) lasts an average of 3–5 years with regular maintenance (hydration, post-dive drying). The leather develops characteristic patina, not degradation. If frequently exposed to chlorine or extreme humidity without drying, the cycle reduces to 18–24 months. Rubber and technical canvas NATO last longer, up to 7–10 years with proper care.