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

The lug width of the Oris Big Crown 01 733 7649 4966-07 5 19 67 is 19mm. Measurement is taken internally, from one lug seat to the opposite, where the spring bar lugs are housed. This measurement is standard for the model and compatible with the vast majority of quality aftermarket straps.

Material choice depends on intended use: for daily elegance, we recommend black alligator or vegetable-tanned calf leather; for professional or casual contexts, ballistic nylon NATO or FKM rubber strap. The brushed stainless steel case is particularly enhanced by dark, natural leathers that develop patina over time.

Obtain a spring bar removal tool. Position the watch on a stable surface, locate the attachment lugs at both ends of the strap, gently press the spring bar inward with the tool until clearance is created, then withdraw the old strap. Insert the new one by aligning the holes to the seats, then press the spring bar inward until you hear a click.

Yes, all straps with 19mm lug width are compatible. We recommend purchasing from suppliers that guarantee construction quality and finishing consistent with a Swiss watchmaking standard: avoid generic budget straps that may damage the internal lug seats.

A quality vegetable-tanned leather strap typically lasts 3–5 years with daily wear, developing desirable patina within the first 12–18 months. Durability depends on frequency of wear, sun exposure, humidity, and maintenance. Alligator and shell cordovan are more resistant, lasting 7–10 years. FKM rubber resists degradation for 4–6 years before showing age.