Rolex · Day-Date 36
Strap for Day-Date 36 Everose Gold / Diamond / MOP - 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 128345RBR-0077 (aka: m128345rbr-0077)
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 128345RBR-0077 (aka: m128345rbr-0077), seen from the bench
Frequently asked questions
What is the lug width of the Rolex Day-Date 36 128345RBR-0077?
The lug width of the Rolex Day-Date 36 128345RBR-0077 is 20 millimetres. This measurement represents the distance between the two horizontal pins that attach the strap to the case. A strap with a different lug width will not fit correctly and may cause play or strain. Always verify this dimension before purchase.
Which strap material pairs best with the Day-Date 36 in rose gold?
Alligator leather is the ideal choice for the Day-Date 36 in rose gold. Its fine, regular texture enhances the case's understated design, whilst its natural durability ensures a strap that ages with dignity. Fine-grained calf leather offers a versatile, supple alternative, whilst vegetable-tanned calf introduces chromatic warmth. Natural rubber performs well in informal settings.
How do I change the strap on my Rolex Day-Date 36?
Removing the strap requires a spring bar tool – a small instrument with a forked tip. Position it beneath one end of the strap's pin, pressing slightly downward to release the internal spring. Repeat on the other side. Insert the new strap by aligning the holes with the pins, pressing until you hear a click. If unsure, consult a professional watchmaker.
Can I use an aftermarket strap on my Day-Date 36 128345RBR-0077?
Yes, provided the strap has a 20-millimetre lug width and respects the model's aesthetic proportions. A high-quality artisanal strap does not diminish the watch's value; conversely, it permits elegant personalisation. Ensure the pins fit perfectly and the strap thickness does not prevent proper closure of the buckle or deployant.
How long does a leather strap last on a daily-wear watch?
A quality leather strap, worn daily without rotation, typically lasts 3-5 years before replacement is necessary. Alligator and vegetable-tanned calf are more resistant. Longevity depends on humidity exposure (perspiration, showering), cleaning frequency and rotation with alternative straps. Periodic maintenance – brushing and conditioning – significantly extends strap 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

