Strap for Big Crown Diamonds 38 Stainless Steel - Diamond / MOP

The lug width is 19mm. This measurement is specific to the model and must be verified with a calliper before purchasing an aftermarket strap. The internal space between the two lug lugs must correspond exactly to the 19mm specified by Oris.

The choice depends on usage and aesthetic preference. Alligator or calf leather with vegetable tanning offers formal elegance whilst maintaining the tool-like character. A NATO in cotton-polyester restores the aviation heritage. An FKM rubber strap is ideal for wet environments. The 19mm width ensures visual continuity with the lug shoulder and wrist.

Position the watch on a soft pad. Locate the spring bars (the pins securing the strap to the lugs). Use a spring bar tool or small flat implement to gently compress the spring at the pin's end. Extract the old pin. Align the new strap's holes with the lug slots and insert the new pins, verifying they click into position. Check that the strap is secure before wearing.

Yes, if specifically manufactured for 19mm lug width. However, not all 19mm straps are suitable: the lug geometry, insertion angle and leather thickness must create visual and functional continuity with the case. We recommend straps engineered for Oris lugs or certified tolerances for this watch family.

Longevity depends on tanning method, usage and maintenance. Vegetable-tanned calf leather lasts 3–5 years with daily wear, developing natural patina. Vegetable-tanned alligator reaches 5–7 years. Avoid prolonged exposure to water, intense perspiration and direct sunlight. Clean the strap regularly with a damp cloth. A cotton-polyester NATO lasts 2–3 years before showing aesthetic wear, though functionality remains intact.