Strap for Divers Sixty-Five 40 Oktoberfest Edition

The lug width of the Oris Divers 65 01 733 7707 4354-07 5 20 59 is 20 millimetres. This dimension is fixed and determined by the forged lugs on the bronze case. It is essential to verify this measurement before purchasing an aftermarket strap using a digital calliper positioned perpendicularly across the lug shoulder.

The Oris Divers 65 pairs excellently with three strap categories. An alligator leather with vegetable tanning mirrors the natural patina of bronze and conveys sophisticated elegance. A premium rubber strap (FKM or Tropic) ensures total impermeability and compatibility with wetsuits. A robust NATO fabric offers versatility between marine and civilian contexts, with seasonal rotation possibilities. The choice depends on predominant usage: marine-only, complete daily wear, or alternation.

To change the strap, a spring bar removal tool or specialised spring bars are required. Position the watch on a stable surface, insert the tool tip into the lateral hole of the lug to compress the internal spring, and gently pull the strap downward. Repeat on the opposite side. Ensure the new strap has a 20mm lug width. If uncertain, consult a specialist atelier such as Casati Milano for in-house strap change.

Yes, any strap with a 20mm lug width is physically compatible with the Oris Divers 65 01 733 7707 4354-07 5 20 59. Artisanal straps of superior quality—constructed in alligator with vegetable tanning, noble calf, marine rubber, or robust NATO fabrics—often offer superior craftsmanship and materials compared to original Oris straps, whilst preserving the model's design and aesthetic identity.

A vegetable-tanned leather strap of sustained quality, utilised regularly and subjected to preventive maintenance (periodic cleaning, annual protective treatment), maintains functionality and aesthetics for 3–5 years. Constant exposure to salt water, perspiration, and UV rays accelerates ageing. Marine rubber straps demonstrate superior longevity (5–8 years), whilst robust technical NATO fabrics resist degradation beyond 7–10 years if not subjected to excessive tension. Seasonal rotation significantly extends the lifespan of each individual strap.