Rolex · Day-Date 36
Strap for Day-Date 36 Platinum - Baguette / Silver / President
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 128396TBR-0004 (aka: M128396TBR-0004)
Selected for the 20 mm lug width · workshop selection
Black Alligator Strap with Light Blue Edges€210
Black Alligator Strap with White Edges€210
Millenium Cognac Alligator Strap€270
Matte Blue Alligator Strap€270
Green Rubberized Alligator Strap with Ecru Tribal Stitching€185
The Day-Date 36 128396TBR-0004 (aka: M128396TBR-0004), seen from the bench
Frequently asked questions
What is the lug width of the Rolex Day-Date 36 128396TBR-0004?
The lug width of the Rolex Day-Date 36 128396TBR-0004 is precisely 20mm. This dimension is specific to this model and is not compatible with 18mm or 22mm straps. Measurement is taken between the two vertical attachment points of the case where the strap sits.
What is the best strap for the platinum Day-Date 36?
For the platinum Day-Date 36, Mississippi alligator remains the historically accurate and proportionally coherent choice, with its regular grain pattern that complements the natural patina of the metal perfectly. Alternatively, Horween shell cordovan offers superior density and rigidity that balances the case weight. Vegetable-tanned calfskin is ideal for those seeking rapid patina development over time.
How do you change the strap on a Rolex Day-Date 36?
The Day-Date 36 features closed lugs with satin-finished terminals. Strap replacement requires a specialist tool (spring bar tool or dedicated watchmaker's instrument) and careful handling to avoid scratching the case. We recommend entrusting this operation to a professional watchmaker or, preferably, contacting Casati Milano atelier for precise execution.
Can I use an aftermarket-compatible strap with my Day-Date 36?
Yes, absolutely. High-quality artisanal aftermarket straps, such as those crafted by Casati Milano, are compatible with the Day-Date 36 128396TBR-0004 thanks to the standardised 20mm lug width. Superior construction quality and material selection—alligator, cordovan, or calfskin—transform the timepiece whilst maintaining aesthetic and mechanical integrity.
How long does a natural leather strap last on a Rolex Day-Date 36?
Longevity depends on leather type and usage intensity. Quality vegetable-tanned alligator has an average lifespan of 5–7 years under moderate daily use. Shell cordovan, thanks to its superior density, can last 8–10 years. The natural patina developing over time is integral to artisanal leather's appeal, transforming the strap into a more beautiful object with age. Proper maintenance extends longevity significantly.
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

