Rolex · Day-Date 36
Strap for Day-Date 36 Yellow Gold / Fluted / White - Roman / President - Diamond
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 128238-0114
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 128238-0114, seen from the bench
Frequently asked questions
What is the correct lug width for the Rolex Day-Date 36 128238-0114?
The lug width of the Rolex Day-Date 36 128238-0114 is 20 millimetres. This measurement represents the distance between the two internal lugs of the case and is critical for purchasing compatible straps. To measure accurately, use a digital calliper positioned perpendicular to the dial between the two lugs: any measurement error will cause structural tension on the strap and accelerate its degradation.
Which strap material is most suitable for the Day-Date 36 in yellow gold?
Alligator represents the choice of maximum aesthetic coherence for the yellow gold Day-Date 36: its natural grain pattern with distinct scutes creates a fascinating contrast and develops a rich patina over time with vegetable tanning. Alternatively, hypoallergenic calf leather offers versatility with uniform texture and elegant ageing. For sporty applications, FKM rubber straps provide comfort and durability whilst maintaining formal dignity.
How do you change the strap on a Rolex Day-Date 36 128238-0114?
Strap replacement requires specific tools: removal of the <a href="/pages/termine-glossario/deployante">deployante</a> clasp (by pressing the locking spring, located laterally) and extraction of the lug pins using a spring bar tool. Work on a soft surface (cloth) to prevent scratches to the case. If you lack experience, consult a qualified watchmaker: Casati Milano performs replacements following personal consultation at the Milan atelier.
Is an aftermarket strap compatible with the Rolex Day-Date 36 128238-0114?
Yes, provided the lug width is exactly 20mm. Quality aftermarket straps (alligator, calf, shell cordovan) are fully compatible and deliver superior aesthetic results compared to standard Rolex straps, particularly in colour customisation and texture variety. Milanostraps offers a comprehensive range of pre-selected 20mm straps for this case.
What is the average lifespan of a leather strap for the Day-Date 36?
A high-quality alligator or calf strap with vegetable tanning offers a lifespan of 3–4 years under moderate use conditions (worn 4–5 days per week). Durability depends on ambient humidity, frequency of direct sunlight exposure and maintenance: avoid prolonged contact with fresh water and apply nourishing cream every six months. With Casati Milano you receive an 18-month warranty covering manufacturing defects, providing protection well beyond the natural break-in period.
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

