Strap for Day-Date 36 Platinum Diamonds / President / Ice Blue Diamonds

The lug width of the Rolex Day-Date 36 118346-0028 is 20mm. This measurement is consistent across all modern platinum Day-Date 36 examples. To verify the measurement, position the watch flat and use a digital calliper to measure the internal space between the two vertical lugs. Precision to the nearest tenth of a millimetre is essential to ensure proper fit without structural play.

For the Day-Date 36 118346-0028 in platinum, we recommend Mississippi alligator with natural grain of 8-12mm, which dialogues with the material density of platinum. A radical alternative is shell cordovan with vegetable tanning, which develops a burnished patina within eighteen months of daily wear. Smooth calf leather with vegetable tanning offers contemporary versatility whilst maintaining the rigour of the model.

Strap replacement requires a specialised tool called a spring bar remover, with two pins that lift the lug fasteners. Position the watch with the strap facing upward, insert the remover into the lateral holes of the internal spring, lift gently and the strap releases. Repeat on the opposite side. We recommend proceeding with care to avoid scratching the platinum case. Alternatively, Casati Milano offers professional strap change service in-atelier by appointment.

Yes, any strap with a 20mm lug width is compatible. The 20mm lug width is Rolex standard since 1956 and guarantees access to a virtually unlimited catalogue in the luxury segment. It is essential to verify that the strap is manufactured in alligator, shell cordovan or superior leather to maintain the aesthetic standard of the platinum model. Milanostraps offers a specialised selection of certified 20mm straps.

Durability depends on material and wear patterns. Alligator, with structured fibre, resists 18-24 months of daily wear. Shell cordovan, denser, reaches 24-30 months before replacement becomes necessary. Calf leather with vegetable tanning has inferior durability, approximately 12-18 months. Humidity, perspiration and sun exposure accelerate ageing. Casati Milano provides an 18-month warranty on manufacturing defects and offers regeneration services for deteriorated straps.