Rolex
Day-Date 36 118348-0195— lug 20mm

The lug width of the Rolex Day-Date 36 118348-0195 is precisely 20 mm. This measurement represents the linear distance between the two inner edges of the seat where the strap is fitted. It is essential to use a compatible 20 mm strap to ensure stable and secure fastening with the spring bar pins. Any variation, even minor (18 mm or 22 mm), would compromise compatibility and risk the watch dropping off your wrist.

Alligator and shell cordovan represent the finest choices for this model. Alligator in cognac or dark brown tones develops a golden patina over time, creating visual harmony with the yellow gold case. Shell cordovan, due to its natural density and luminosity, creates a remarkable complementarity. Vegetable-tanned calf leather remains the intermediate option: lightweight, unobtrusive on the wrist, and durable for 6–8 years. NATO or rubber straps are discouraged for this model, as they would create a stylistic contrast inconsistent with its elegant and proportioned nature.

Changing the strap requires a spring bar tool (a specific instrument for pin removal) and a few minutes of care. After locating the small holes on the sides of the case, insert the flat end of the tool to compress the internal spring of the pin: this allows extraction of the metal lever. Subsequently, remove the old strap. To install the new one, align the strap holes with the pins and press with a smooth motion until the pin locks into the seat. Once installed, verify that the strap is firmly secured before wearing the watch.

All straps with a 20 mm lug width are technically compatible with the 118348-0195. However, for aesthetic and functional coherence, superior quality materials are recommended: alligator, shell cordovan, and vegetable-tanned calf leather. Your choice of material should consider the colour tone and evolution of patina over time. Low-quality leather straps or those with synthetic finishes do not guarantee longevity appropriate to a watch of this prestige and investment duration.

Lifespan depends on the material and maintenance. Quality alligator, with daily use, maintains structural integrity for 6–8 years. Shell cordovan, thanks to its natural density and water resistance, can exceed 10 years. Vegetable-tanned calf leather typically lasts 6–8 years before requiring replacement. Factors such as frequency of use, exposure to perspiration, humidity, and UV rays affect this estimate. Proper maintenance—occasional cleaning, drying, and storage in a dry environment—significantly extends strap life. Casati Milano provides an 18-month warranty against manufacturing defects on every bespoke strap.