Rolex · Day-Date 36
Strap for Day-Date 36 Everose Gold - Diamond / Silver - 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-0081 (aka: m128345rbr-0081)
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-0081 (aka: m128345rbr-0081), seen from the bench
Frequently asked questions
What is the lug width of the Rolex Day-Date 36 128345RBR-0081?
The lug width (ansa width) of the Rolex Day-Date 36 128345RBR-0081 is precisely 20 millimetres. This measurement, calculated between the inner edges of the two lugs on the case, is exclusive to this model and incompatible with other Day-Date references or Rolex sports watches. A 20mm strap must respect this dimension with millimetre-level accuracy to ensure correct fit and secure deployment clasp operation.
Which strap material is best suited for a rose gold Day-Date 36?
Nilotic alligator leather with vegetable tanning is the most appropriate choice: its natural grain and warm tone dialogue perfectly with Everose gold without competing with the dial. Select deep brown, mahogany, or chestnut in matte finish, or naturally aged burgundy for evening wear. Avoid pure shell cordovan (excessively glossy) and rigid black straps, which stiffen the aesthetic profile of the 128345RBR.
How do you change the strap on a Rolex Day-Date 36?
Strap replacement on a Day-Date 36 requires specific tools: a precision spring bar tool (slim diameter) and a stable work surface. Insert the tool into the small hole beneath the lug to compress the internal spring, freeing the bar end. Repeat on the opposite side. For high-value watches, consultation with a Rolex-certified watchmaker or specialist in 20mm lugs is strongly recommended to avoid damage to case threads.
Are aftermarket straps compatible with the 128345RBR?
Yes, provided the lug width is exactly 20mm and construction quality matches luxury watch standards. Artisanal leather straps with natural finishes and precise stitching ensure complete compatibility without aesthetic compromise. Avoid generic or undersized straps (e.g. 19mm), which cause case play or excessive stress on spring bars during prolonged wear.
How long does a leather strap last on a daily-worn luxury watch?
A high-quality natural leather strap subjected to daily wear typically lasts 3–5 years before replacement is necessary. Longevity factors include: humid climate (accelerates degradation), prolonged sun exposure (fades colour), body perspiration (degrades fibres). Alligator or vegetable-tanned shell cordovan ages more gracefully than pure calf leather. Regular maintenance—gentle cleaning, air exposure, avoidance of harsh detergents—significantly extends strap lifespan.
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

