Rolex · Day-Date 40
Strap for Day-Date 40 Everose / Chocolate
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 40 228235-0053 (aka: M228235-0053)
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 40 228235-0053 (aka: M228235-0053), seen from the bench
Frequently asked questions
What is the lug width of the Rolex Day-Date 40 228235-0053?
The lug width of the Rolex Day-Date 40 228235-0053 is exactly 20mm. This measurement refers to the distance between the two case lugs (horizontal protrusions) measured internally with a digital calliper. It is essential to verify this dimension before ordering an aftermarket strap: an error would make fitting physically impossible. On this collection, 20mm is the standard to maintain harmonious proportions between the 40mm case and the strap.
What is the best strap for the Day-Date 40 228235-0053 in rose gold?
The best strap for the Day-Date 40 228235-0053 in Everose rose gold is a superior quality alligator strap in cognac brown, dark brown or mahogany. Alligator offers a fine natural grain that develops patina over time, creating aesthetic continuity with rose gold. An alligator strap with a rose gold satin deployante maintains constructive coherence. Alternatively, shell cordovan subjected to vegetable tanning offers superior density and colour development towards amber. For formal contexts, alligator; for longevity and patina, shell cordovan.
How do you change the strap on a Rolex Day-Date 40?
The Day-Date 40 strap is fitted through the lateral lugs of the case using the dedicated Rolex tool (spring bar tool) or an equivalent quality instrument. Place the watch on a soft surface, insert the tip of the spring bar tool into the small lateral slot beneath the lug, apply light pressure to compress the internal spring, and slide the lug out of the slots. Repeat on the other side. For fitting, reverse the procedure. Verify that the strap is exactly 20mm wide: an error compromises fitting. If lacking experience, entrust the operation to a certified watchmaker.
Is it possible to fit an aftermarket strap on a Rolex Day-Date 40 228235-0053?
Yes, it is possible to fit a certified quality aftermarket strap on a Day-Date 40 228235-0053, provided the lug width is exactly 20mm. Many specialist manufacturers (including Casati Milano) produce compatible aftermarket straps in alligator, calf leather and shell cordovan. Compatibility is not automatic: verify the lug width with precision and consult the supplier before ordering. A well-crafted aftermarket strap does not compromise the watch's integrity and extends aesthetic possibilities without sacrificing functionality.
How long does a leather strap last on a Rolex like the Day-Date 40?
The lifespan of a leather strap depends on material, use and maintenance. An alligator strap of quality, worn regularly (not daily), lasts 3–5 years before requiring replacement. A shell cordovan strap, denser and more resistant, can reach 5–8 years. Exposure to direct sunlight, humidity and perspiration accelerates ageing. Casati Milano guarantees 18 months for manufacturing defects; beyond that period, lifespan depends on usage factors. Rotating multiple straps—one formal, one casual—significantly extends the life of each.
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

