Strap for Oris Big Crown 01 745 7629 4064

The lug width is 22mm. This measurement reflects the classic avionic proportions of the model: on a 44mm dial, 22mm provides aesthetic balance and compatibility with the extensive aftermarket strap offering. To verify, measure the distance between the two lugs (spring bar holes) perpendicularly to the case using a calliper.

Italian vegetable-tanned leather remains the primary choice, particularly bridle veal or Tuscan brown. It develops natural patina over time, visually harmonising with the historical avionic aesthetic. Alternatively, FKM rubber for intensive use, or reversible NATO for versatility. Structured alligator creates sophisticated pairing with the brushed steel case.

Position the watch on a soft pad. Extract the lateral spring bars using a dedicated tool or fine needle, pressing gently towards the centre. Remove the worn strap; insert the new one by clicking the spring bar until it latches. Do not force: the mechanism must engage with millimetre precision. Verify that the spring bars are fully seated in the anchor holes.

Yes, the 22mm lug width is industry standard. Milanostraps offers a selection of vegetable-tanned leather, NATO, and FKM rubber straps, all specifically compatible with 22mm. Each strap undergoes mechanical fit testing before dispatch. Access the 22mm collection to view material varieties, colours, and buckle configurations.

A quality vegetable-tanned leather strap, with daily wear, maintains structural functionality for 3–5 years. It develops patina and texture over time without functional degradation. Ageing is predictable and desirable. To extend longevity, rotate with at least one additional strap, reducing continuous exposure to perspiration and humidity. Minimal maintenance (periodic cleaning, conditioning with specific waxes) preserves flexibility.