Rolex · Day-Date 36
Strap for Day-Date 36 Yellow Gold Fluted / Oyster / Paved
Takes 20 mm straps. Verified lug width, the straps that fit this model, and answers to the most common questions.
Lug width
Straps for the Day-Date 36 118388-0192
Selected for the 20 mm lug width · workshop selection
Matte Dark Gray Alligator Strap€195
Black Alligator Strap with Light Red Edging€149
Vintage Alligator Strap Cognac€195
Hammered Pink Strap with Ecru Stitching€98
Vintage Brown Calfskin Strap — Natural Patina€98
Frequently asked questions
What is the lug width of the Rolex Day-Date 36 reference 118388-0192?
The lug width (spring bar distance) of the Rolex Day-Date 36 reference 118388-0192 is precisely 20 millimetres. This measurement is specific to the 36 mm case and should not be confused with other Rolex models featuring 22 mm lugs. Always verify the width with a digital calliper positioned perpendicularly inside the lugs before ordering an aftermarket strap.
Which strap would you recommend for the Day-Date 36 118388-0192 in yellow gold?
For the Day-Date 36 in 18-carat yellow gold, we recommend American alligator in dark cognac tone or vegetable-tanned calf leather in bordeaux shade. Alligator maintains elegant proportions with its characteristic grain pattern, whilst vegetable-tanned calf develops a patina over time that amplifies the gold's luminosity. For less formal occasions, Japanese shell cordovan offers natural durability and a fine grain that harmonises with the dial indices.
How do you change the strap on a Rolex Day-Date 36?
The strap is changed by removing the lugs from the case. Obtain a spring bar tool (two-pronged instrument) and position it beneath the internal spring of the lug, lifting until the pin releases. Proceed delicately to avoid scratching the gold case. Once both lugs are free, slide the old strap away and insert the new one, ensuring the springs return to position and the strap sits symmetrically against the case.
Is an aftermarket strap compatible with the 118388-0192?
Yes, any strap with a 20 mm lug width is compatible. However, build quality significantly impacts durability and overall aesthetics. An artisanal strap crafted from superior leather—alligator, vegetable-tanned calf, or shell cordovan—guarantees 5–8 years longevity with periodic maintenance, whilst industrial synthetic or poor-quality leather straps deteriorate within 18–24 months.
What is the lifespan of a leather strap for a Rolex Day-Date 36?
A high-quality leather strap, hand-crafted in alligator or vegetable-tanned calf, typically lasts 5–8 years when worn regularly (4–5 days weekly) and subjected to periodic maintenance. Longevity depends on factors including ambient humidity, skin transpiration, freshwater exposure and cleaning frequency. With proper care and rotation amongst multiple straps, lifespan can extend to 10 years.
The next step
The right strap isn't chosen. It is built, together.
From the atelier appointment to delivery, every step is made for those who know that things done well take time. Rare leathers, one piece at a time, eighteen months of warranty.
Request an appointment →Casati Milano · Via XX Settembre 15, Milan · by appointment only

