Rolex · Day-Date 36
Strap for Day-Date 36 Platinum - Baguette / Pink - Baguette / 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-0025 (aka: M128396TBR-0025)
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
The Day-Date 36 128396TBR-0025 (aka: M128396TBR-0025), seen from the bench
Frequently asked questions
What is the lug width of the Rolex Day-Date 36 128396TBR-0025?
The lug width of the Rolex Day-Date 36 128396TBR-0025 is 20 millimetres. This measurement refers to the distance between the case lugs and determines strap compatibility. For precise measurement, use a digital calliper positioned between the centres of both lugs: this is the most reliable methodology to avoid errors that would compromise strap fit.
What is the best strap material for a platinum Rolex Day-Date 36?
For the platinum Day-Date 36, alligator and vegetable-tanned calf leather represent the optimal choices. Louisiana or Nile alligator develops a golden patina complementary to platinum's natural friability; vegetable-tanned calf ages with fascinating graduality, progressing through warm caramel tones. A deployante clasp in platinum or titanium completes the ensemble without aesthetic or functional compromise.
How do I change the strap on a Rolex Day-Date 36?
Changing the strap requires a spring bar tool (thin flat-edged instrument) to lever the lugs gently. Position the watch on a stable surface with the lug side upward, apply gentle pressure on the lug from the inner side, slide the old strap away, and insert the new strap by threading the bars through the existing lugs. If the strap features a deployante, the procedure is even more straightforward as the clasp requires no case manipulation.
Can I use an aftermarket strap on this Rolex?
Yes, you can use a quality artisanal aftermarket strap compatible with the 20-millimetre lug width. A strap in alligator, calf, or shell cordovan crafted by qualified artisans does not compromise the watch's value or functionality. What matters is precise lug measurement and construction quality: an improperly fitted strap will generate aesthetic and mechanical stress.
How long does a natural leather strap last on a daily-wear watch?
The lifespan of a leather strap depends on usage frequency, climate conditions, and leather type. Well-maintained alligator or shell cordovan lasts 3–5 years of daily wear; vegetable-tanned calf, slightly more delicate, averages 2–4 years. Exposure to excessive moisture, perspiration, and UV radiation reduces longevity. Casati Milano provides an 18-month warranty against manufacturing defects and recommends periodic rotation between straps to extend useful life.
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

