Rolex
Pearlmaster 81315-0003— lug 17mm

The lug width of the Rolex Pearlmaster 81315-0003 is 17 millimetres. This is the vertical distance between the upper and lower spring bar holes on the rose gold case. It is essential to measure this dimension precisely using a calliper, as only straps sized exactly to 17 mm will fit correctly into the lugs, ensuring proper alignment between the case and strap.

For the Pearlmaster 81315-0003 in rose gold, we recommend African alligator as the priority choice, as it enhances the case sophistication with regular scales and natural grip. Alternatively, shell cordovan offers refined lustre and structural density that ages gracefully. Calf leather with vegetable tanning is ideal for those seeking a patina that improves with wear. We advise against NATO straps: rose gold deserves presentation that elevates the material, not diminishes it.

The strap is changed using a spring bar tool (a specialized lever designed to remove the bars). Position the tool gently under the spring bar from one side, press inward towards the case to release the bar from its seat, then extract the strap. Repeat for the opposite bar. When installing the new strap, align the internal hole of the strap with the spring bar and press until you hear the click of engagement. Perform this operation on a soft surface to prevent scratching the rose gold case.

Yes, provided that the strap is constructed precisely for a 17 mm lug width and the leather thickness does not exceed 2.2-2.4 mm. The Pearlmaster's lugs are tapered and geometrically refined: excessively stiff straps or those with excessive thickness will disrupt the visual harmony. A bespoke leather strap, such as those crafted by Casati Milano, guarantees perfect compatibility with the rose gold case.

A quality leather strap (alligator, shell cordovan, or calf) typically lasts 4-6 years with daily wear. Longevity depends on exposure to perspiration, humidity, sunlight, and usage frequency. Vegetable-tanned leathers tend to last slightly shorter (3-4 years) but develop a fascinating patina. The warranty applied by Casati Milano is 18 months against manufacturing defects, covering construction anomalies. To maximise lifespan, we recommend rotating straps and keeping them dry during humid seasons.