Strap for Day-Date 36 Platinum - Baguette / White - Roman / President

The lug width of the Rolex Day-Date 36 128396TBR-0018 is 20 mm. This is the standard measurement for round cases of 36 mm diameter. You can verify this easily by measuring the distance between the case lugs from outer edge to outer edge.

For a platinum Day-Date 36, alligator leather with vegetable tanning is the most refined choice, offering formal elegance and natural ageing. Shell cordovan is ideal for those seeking longevity exceeding 10-15 years. Vegetable-tanned calf leather represents an excellent balance between aesthetics and daily durability. Natural vulcanised rubber is the practical solution for humid or rigorous environments.

Strap replacement is carried out using spring bars (sprung metal rods) that connect the case lugs to the strap attachments. Using a dedicated spring bar tool, you depress the internal spring of the bar, extract it, and disconnect the old strap. Subsequently, insert the new strap by aligning the holes with the lugs and push the spring bar until it clicks into position. For those preferring not to do it manually, we recommend contacting an authorised Rolex service centre or a specialised master craftsman.

Yes, provided the aftermarket strap has a nominal width of 20 mm with minimal tolerances (±0.2 mm). Straps made to measure at Casati Milano are calibrated to the specific case to ensure precise fit without play or forcing. Always verify that the strap is certified for 20 mm lug width before purchase.

The lifespan of a natural leather strap depends on the material and maintenance. Shell cordovan, with its dense fibrous structure, guarantees 10-15 years of use. Vegetable-tanned calf leather lasts on average 5-8 years with regular use. Alligator, less resistant to stress, has a lifespan of 5-7 years. Proper maintenance — regular cleaning, rapid drying if wet, periodic rest — significantly extends these periods. Casati Milano provides an 18-month warranty on manufacturing defects.