Rolex · Day-Date 40
Strap for Day-Date 40 Platinum - Baguette / Black Baguette
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 228396tbr-0012
Selected for the 20 mm lug width · workshop selection
Black Alligator Strap with Light Blue Edges€210
Black Alligator Strap with White Edges€210
Millenium Cognac Alligator Strap€270
Matte Blue Alligator Strap€270
Green Rubberized Alligator Strap with Ecru Tribal Stitching€185
The Day-Date 40 228396tbr-0012, seen from the bench
Frequently asked questions
What is the lug width of the Rolex Day-Date 40 228396tbr-0012?
The lug width of the Rolex Day-Date 40 228396tbr-0012 is 20 mm, measured perpendicularly from inside edge to inside edge of the lateral case lug. This dimension is critical for purchasing a compatible aftermarket strap.
What is the best strap for the Rolex Day-Date 40 228396tbr-0012?
For this platinum reference, Nile alligator with traditional tanning represents the most coherent aesthetic choice. The leather with uniform geometric scales maintains the British formalism parallel to the watch's design. Vegetable-tanned calf leather is an excellent alternative for those who appreciate colour evolution over time.
How do you change the strap on a Rolex Day-Date 40?
Use a dedicated spring bar tool. Position the watch face-down, insert the tool into the lateral bar slot, lift gently and slide the bar outward. Repeat on the opposite side. Reverse the procedure for the new strap, ensuring the bar is properly seated in both lug holes.
Can an aftermarket compatible strap be used on this reference?
Yes. The strap must be precisely 20 mm in width, with connecting bars in stainless steel or platinum. Verify that total length accommodates your wrist and that the deployant functions correctly. Italian artisanal straps with manufacturing guarantees are recommended.
How long does a leather strap last on this Rolex?
With moderate daily use and appropriate maintenance, an alligator strap lasts 4-6 years before replacement. Vegetable-tanned calf shows better longevity if protected from excessive moisture (6-8 years). Durability depends on sun exposure, perspiration, frequency of use and preventive care.
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

