Strap for Big Crown Pointer Date 40 Bronze / AWC

The Oris Big Crown 01 754 7741 3115-Set features a 20mm lug width. This is the distance between the horizontal lugs on the case and determines compatibility with aftermarket straps. To verify, measure with a digital calliper between the two lugs: the measurement must be exactly 20mm. This specification is critical for ensuring precise fitting and mechanical stability of the strap during use.

Strap selection depends on intended use and case choice. For the bronze version, we recommend alligator in dark brown or vegetable-tanned calf in neutral tones—both enhance the natural patina of the metal. For stainless steel, a black NATO is the authentic choice in maritime contexts; for formal elegance, calf or shell cordovan in burgundy. Priority is confirming 20mm lug width and selecting a deployant clasp for leather straps, which allows adjustment on the leather whilst preserving its integrity.

Strap replacement requires a quality spring bar tool. Support the case on a soft surface (microfibre cloth), locate the two horizontal lugs, insert the pointed end of the tool under the lug pin, apply even pressure until the internal spring releases. The pin will spring out: repeat on the opposite side. Align the new strap lugs with the pins, insert the pin on one side, slide the strap into position, then press the pin into the opposite side until secure click. Verify the strap sits symmetrically relative to the case.

Any strap manufactured for 20mm lug width is compatible with this model. This includes alligator, calf, shell cordovan, exotic leathers, NATO, rubber and technical fabrics. Compatibility is guaranteed by lug width specification, not strap brand. Milano Straps offers a dedicated collection of 20mm straps, selected for construction quality and aesthetic merit. It is essential to verify that chosen strap features appropriate lug width for the case (typically 18-20mm internal).

Leather strap longevity depends on tanning type, intensity of use and environmental exposure. High-quality vegetable-tanned calf resists 24-36 months of daily wear; alligator exceeds 48 months. Shell cordovan, owing to its natural density, may reach 60+ months. Salt water, perspiration and UV exposure accelerate ageing. Maintenance—periodic cleaning, rapid drying after wetting, annual water-repellent treatment—significantly extends service life. With proper care, a premium strap maintains both function and appearance well beyond standard periods.