Rolex · Datejust 36
Strap for Datejust 36 Rolesor Yellow Domed / Oyster / White Roman
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 Datejust 36 116203-0135
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 Datejust 36 116203-0135, seen from the bench
Frequently asked questions
What is the lug width of the Rolex Datejust 36 116203-0135?
The Rolex Datejust 36 reference 116203-0135 features a lug width of 20 millimetres. This dimension represents the distance between the case attachment terminals and is essential for selecting a compatible watch strap. To measure accurately, position a digital calliper perpendicular to the internal attachment pins: the maximum acceptable tolerance is ±0.5mm to ensure secure fastening without lateral play.
What is the best strap for the Rolex Datejust 36 116203-0135?
The best strap depends on intended use and aesthetic preference. For formal elegance, we recommend genuine alligator in vegetable-tanned leather with regular grain, or shell cordovan in dark brown. For daily comfort and longevity, vegetable-tanned calf offers softness and durability. Colour selection should remain understated: cognac brown, aged burgundy, polished black, or charcoal grey harmonise with the bicolour gold-steel case of the 116203-0135. A triple-wrap deployant clasp is strongly recommended to distribute stress evenly across stitch points.
How do you change the strap on a Rolex Datejust 36 116203-0135?
Strap replacement requires two specific tools: a spring bar remover and a small flat work surface. Position the watch face down, insert the remover under the spring bar from one end, apply gentle pressure to compress the internal spring, and slide the old strap outward. Repeat on the opposite side. Insert the new strap terminals into the case holes, ensuring the springs lock into position. If unfamiliar with this procedure, consult a professional watchmaker to avoid case damage.
Is an aftermarket strap compatible with the Rolex Datejust 36 116203-0135?
Yes, any quality aftermarket strap with a 20mm lug width is completely compatible with the 116203-0135. Compatibility depends solely on strap width, regardless of brand or origin. Custom-made artisanal straps offer the opportunity to select premium materials (alligator, cordovan, calf) and personalise colour and finish to achieve aesthetic harmony superior to OEM straps. Always verify dimensional tolerance: 20mm ±0.5mm is the industrial standard.
How long does a leather strap last on the Rolex Datejust 36 116203-0135?
Leather strap lifespan depends on material quality, tanning method, and usage patterns. A quality artisanal alligator or cordovan strap, with proper maintenance (gentle drying after water contact, occasional conditioning with leather-specific creams), can function effectively for 5–10 years. Vegetable-tanned calf ages more visibly, developing a patina many consider desirable. Primary wear manifests at flex points (wrist articulation area). A deployant clasp significantly reduces stress on stitch points, extending strap life by 2–3 years.
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

