Rolex
Day-Date 36 118389-0084— lug 20mm

The lug width of the Day-Date 36 reference 118389-0084 is 20mm. This measurement represents the distance between the two lateral lugs of the case where the strap attaches. Precise measurement is essential: position a digital calliper between the lugs at the narrowest point to avoid compatibility errors.

For the Day-Date 36 118389-0084 in white gold, alligator leather is recommended for classical elegance, alternatively calf leather for greater daily versatility or shell cordovan for those who desire a patina that develops over time. All these materials require 20mm lugs specifically shaped for this model.

Strap replacement is accomplished using a spring bar tool to compress the internal springs of the lugs and slide them out of the case's lugs. This operation should be performed on a soft surface to avoid scratches. If you are unsure, entrust the task to a specialised service such as Casati Milano, which operates by appointment at their Milan atelier.

Yes, it is possible. Certified artisanal straps compatible with the 20mm lug width can be installed on the Day-Date 36 118389-0084. It is however essential to verify that the attachments are precisely dimensioned and that the strap is made from suitable materials (alligator, calf, shell cordovan) to maintain the aesthetic integrity of the watch. Milano Straps offers a curated selection of compatible options.

The lifespan of a leather strap depends on frequency of use and the quality of the material. Quality alligator leather typically resists 3-5 years of daily use; shell cordovan can last 7-8 years due to its density and resistance to wear. Leather wears primarily at the lug and buckle zones. The warranty offered by Casati Milano covers 18 months against manufacturing defects.