Rolex
Datejust 36 116238-0070— lug 20mm

The Rolex Datejust 36 reference 116238-0070 features a 20 mm lug width. This measurement is standard across all Datejust 36 models in yellow gold and is essential for ensuring aftermarket strap compatibility. To verify the correct lug width, measure the internal distance between the two anse extremities using a digital calliper – the value must be precisely 20 mm.

For a yellow gold Datejust 36, alligator leather represents the most elegant and refined choice. The reptile's fine grain structure accentuates the lustre of the gold and allows development of a shared patina over time. Excellent alternatives include vegetable-tanned calf leather for dramatic ageing, shell cordovan for unparalleled colour depth, and a silk-and-cotton NATO paired with a yellow gold deployante clasp for everyday versatility.

Strap changing requires specific tools: a spring bar remover or sprout tool. Position the watch with the strap facing downward, insert the tool beneath the spring retaining the lug to release it, and withdraw the spring bar from its seats. Once both lugs are freed, the original strap separates from the case. Insert the new strap by aligning the holes with the lugs and reinsert the springs with firm pressure until the locking click is heard.

All straps with a 20 mm lug width are compatible. Milano Straps offers a carefully curated collection of artisan straps in various materials – alligator, calf leather, shell cordovan, structured NATO fabrics, and FKM rubbers – manufactured according to Rolex construction tolerances to ensure smooth lug channel flow without excessive play. Each strap is available with different lug loop and closure finishes.

The lifespan of a natural leather strap depends on frequency of use, environmental exposure, and leather type. Quality alligator may last 5–7 years with moderate wear; vegetable-tanned calf presents slightly lower durability (4–5 years) but develops extraordinary patina; shell cordovan is exceptionally long-lived and can exceed 10 years. Proper maintenance – avoiding prolonged water and humidity exposure – significantly extends operational life.