Rolex · Day-Date 36
Strap for Rolex Day-Date 36 1836
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 1836
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 1836, seen from the bench
Frequently asked questions
What is the lug width of the Rolex Day-Date 36 reference 1836?
The Rolex Day-Date 36 reference 1836 has a lug width of 20 mm, measured between the lower lugs of the case. This dimension is consistent across the entire Day-Date 36 range, regardless of case material or dial variant. The taper towards the buckle is typically 16 mm.
What is the best strap for the Rolex Day-Date 36 1836?
For the Day-Date 36 ref. 1836 in 18k yellow gold, an alligator strap in burgundy, cognac or midnight blue is the most coherent choice with the watch's formal character. Vegetable-tanned calf leather is an alternative that develops patina over time, while shell cordovan offers a compact grain and a luxurious appearance with a strong artisanal quality.
How do you change the strap on a Rolex Day-Date 36 1836?
The strap on the Rolex Day-Date 36 ref. 1836 is secured to the lugs via 20 mm spring bars. To remove it, use a spring bar tool or a fine-tipped pry tool to compress the spring bars and slide the strap free. Care must be taken not to scratch the gold lugs during the process. It is advisable to entrust the operation to a watchmaker or specialist atelier.
Are there aftermarket straps compatible with the Rolex Day-Date 36 1836?
Yes, the Rolex Day-Date 36 1836 accepts any aftermarket strap with a 20 mm lug width and a standard 16 mm taper. Milano Straps produces handcrafted compatible straps in alligator, calf leather, shell cordovan and other selected materials, with buckles in steel or gold-tone metal. Compatibility is ensured by the standard spring bar sizing.
How long does a leather strap last on a Rolex Day-Date 36 1836?
The lifespan of a leather strap depends on the material, care and daily use. A high-quality alligator strap, rotated with at least one other strap and kept away from water and excessive perspiration, can last between three and five years while retaining good structural integrity. Vegetable-tanned calf tends to last slightly less but develops a patina valued by collectors. Casati Milano straps carry an 18-month warranty against manufacturing defects.
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

