Rolex · Day-Date 36
Strap for Day-Date 36 Yellow Gold - Fluted / Emoji Puzzle
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 128238-0106 (aka: M128238-0106)
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 128238-0106 (aka: M128238-0106), seen from the bench
Frequently asked questions
What is the lug width of the Rolex Day-Date 36 128238-0106?
The lug width of the Rolex Day-Date 36 128238-0106 is 20 millimetres. This measurement is specific to the Day-Date 36 model and is determined by the distance between the inner edges of the lugs on the case. It is essential to respect this width to ensure proper strap attachment and correct aesthetic proportion on the watch.
Which type of strap is most suitable for the Day-Date 36 128238-0106 in yellow gold?
For the Day-Date 36 in yellow gold, African alligator is the traditional choice and most coherent with the model's aesthetic heritage. Alligator develops a natural patina that creates a beautiful colour dialogue with aged yellow gold. Alternatively, vegetable-tanned calf leather offers refined tactile quality, whilst shell cordovan guarantees natural water resistance and profound lustre. For summer, a canvas NATO strap is a discreet and reversible choice.
How do you change the strap on the Rolex Day-Date 36?
The strap on the Rolex Day-Date 36 128238-0106 is changed using a springbar removal tool. You must remove the existing springbar from the lugs using a dedicated watchmaker's tool, then insert the new strap into the lugs and secure the new springbar. If you are not experienced, we recommend consulting a professional watchmaker to avoid damaging the case lugs. Casati Milano and specialist strap laboratories can perform this operation at delivery.
Which aftermarket straps are compatible with the Day-Date 36 128238-0106?
All straps with a 20-millimetre lug width are compatible with the Rolex Day-Date 36 128238-0106. You may choose from noble leather (alligator, calf, shell cordovan, crocodile), technical textiles, premium rubber or NATO straps. What matters is verifying that the strap is designed for a 20 mm lug width and that the buckle (if present) or lugs do not interfere with the case edges. Milanostraps offers a complete selection of 20mm artisanal straps tested on this model.
How long does a leather strap last on the Rolex Day-Date 36?
The lifespan of a leather strap depends on the material and usage. High-quality alligator with vegetable tanning has an average life of 4–6 years with daily wear. Shell cordovan, owing to its natural water resistance, can last 5–7 years. Vegetable-tanned calf leather, being more delicate, requires regular maintenance and has a lifespan of 3–5 years. An artisanal strap from Casati Milano includes an 18-month guarantee against manufacturing defects and, with proper care (avoiding excessive moisture and storage in a dry environment), can last well beyond the initial warranty.
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

