Strap for Big Crown Swiss Hunter Team PS Edition Silver - Diamond

The lug width (misura ansa) of the Oris Big Crown 01 733 7649 4091-Set LS is 19 millimetres. This measurement identifies the internal distance between the spring bars that connect the strap to the case. To verify the width correctly, remove the current strap and measure the space between the two metal rings: the resulting value corresponds precisely to 19mm, allowing you to select compatible straps with accuracy.

For the Big Crown 01 733 7649 4091-Set LS, we recommend a vegetable-tanned alligator strap in cognac brown or black, or a calf leather with compact grain. Alligator develops a natural patina over time that reflects the watch's history, whilst maintaining structural resistance for 8–12 years. For humid summers or aquatic environments, FKM (Viton) rubber in black or blue ensures colour stability and resistance to perspiration and chlorine. Ballistic nylon NATO represents the sportive alternative honouring the model's military heritage.

To change the strap, position the watch on a soft cloth with the case facing upwards. Use a dedicated tool (spring bar tool) to gently compress the metal pin towards the centre of the case, allowing you to extract the end from the lug. Repeat on the other side. To install the new strap, insert one end of the pin into the lug, apply pressure until it enters fully, then repeat on the other side. Avoid excessive force to prevent damage to the delicate lugs on the stainless steel case.

Yes, the 19-millimetre lug width grants access to a selective catalogue of artisanal aftermarket straps. Casati Milano produces 19mm straps in alligator, vegetable-tanned calf, shell cordovan and FKM rubber, all compatible with the Big Crown 01 733 7649 4091-Set LS. The construction quality of artisanal straps exceeds original equipment, guaranteeing hand-crafted techniques, precise finishing and extended durability compared to standardised industrial production.

A vegetable-tanned alligator or calf strap of quality lasts an average of 8–12 years with daily wear and ordinary maintenance (monthly cleaning with soft cloth, conditioning with specialist creams every 3–4 months). Lifespan varies according to frequency of use, exposure to direct sunlight and humidity. Vegetable tanning develops a natural patina that enhances aesthetics in the first year, whilst the fibrous structure remains stable. In very humid environments or with intense perspiration, useful life may reduce to 5–7 years; conversely, moderate and seasonal use can extend it beyond 12 years.