Strap for Daytona White Gold Blue Sapphire Strap Sodalite Diamond

The lug width (ansa in Italian) of the Rolex Daytona 116589saci-0003 is 20 millimetres. This dimension is specific to the 40mm case and is essential for strap compatibility. Measurement must be taken in the internal space between the case lugs, not on the diameter of the spring bar hole.

For the Rolex Daytona 116589saci-0003 in white gold, black alligator remains the canonical aesthetic choice, coherent with the model's racing heritage. Alternatively, vegetable-tanned calf offers a patina that ages nobly, whilst shell cordovan guarantees superior mechanical resistance and a specular lustre. The choice depends on usage context and personal chromatic preference.

Strap replacement requires a specialized tool (spring bar tool) to compress the anchor springs positioned at the extremities of the case lug. We do not recommend a DIY approach: entrust a professional watchmaker to avoid damage to the case. For a bespoke service, contact the Casati Milano atelier to follow the fitting process.

Yes, any well-crafted strap with a 20mm lug width is mechanically compatible. We recommend selecting superior-quality leathers (alligator, calf, shell cordovan) to guarantee aesthetic harmony with the white gold and construction precision of the 116589saci-0003. Avoid straps of excessive thickness, which could alter the case ergonomics.

The durability of a leather strap depends on material quality, tanning method, and usage. An alligator or vegetable-tanned calf with proper maintenance can last 8–12 years; shell cordovan, being more resistant, can exceed 15 years. Daily wear, moisture contact, and thermal variations accelerate the natural ageing of leather. We recommend replacing the strap when the fibre begins to yield or stitching loosens.