Rolex
Pearlmaster 81318-0005— lug 17mm

The Rolex Pearlmaster 81318-0005 features a lug width of exactly 17.00 millimetres. This dimension is specific to this model and does not correspond to the 16mm of classic Datejust watches. Verifying compatibility is essential: measure the space between the two lugs of the case before ordering a strap. Even half a millimetre of error would result in an incompatible strap.

Ideal materials include alligator, vegetable-tanned calf leather, Japanese shell cordovan, and technical rubber. Alligator offers natural grain and micro-reflections in harmony with 18-karat yellow gold. Calf develops patina over time. Shell cordovan presents structured texture and initial rigidity that softens with wear. Rubber is contemporary and functional for informal contexts. Choice depends on your usage style and desired aesthetic effect.

Strap replacement requires a dedicated tool (spring bar tool) to remove the elastic pins that secure the strap to the case lugs. We recommend having this operation performed by an authorised Rolex service centre or a specialist watchmaker to avoid damage to the case or new strap. If you purchase from Casati Milano, you can coordinate installation at the atelier.

Yes, provided the strap is constructed with 17mm lug width and made from high-quality artisanal materials (alligator, calf, shell cordovan). Quality aftermarket straps often exceed the original Rolex aesthetic through custom finishes, silk stitching, and gold-plated deployante clasps. Always verify that the manufacturer guarantees dimensional precision of ±0.1mm.

A premium leather strap (alligator, calf, shell cordovan) has an average lifespan of 3-5 years under daily wear conditions. Factors such as sun exposure, humidity, perspiration, and frequency of use significantly influence longevity. With proper care (avoiding prolonged water contact, cleaning with soft cloth, storing in dry location), the lifespan can extend considerably. Casati Milano provides an 18-month warranty on manufacturing defects.