Strap for Day-Date 36 Yellow Gold Fluted / President / Meteorite

The lug width of the Day-Date 36 118238-0119 is exactly 20 millimetres. This measurement represents the distance between the two metal pins on the watch lugs where the strap attaches. It is essential to verify that any aftermarket strap is constructed with a 20mm width at the ends to ensure correct mounting and stability on the watch. Incorrect measurements—such as confusing 18mm or 22mm—render the strap incompatible.

For the yellow gold Day-Date 36, alligator represents the classical choice: the natural grain texture reflects light harmoniously with the gold, creating aesthetic continuity. Vegetable-tanned alligator is preferable because it develops patina over time, ageing in synchrony with the case. Alternatively, French calf offers a finer grain for formal contexts, whilst shell cordovan guarantees solidity and durable deployante grip thanks to fibre density.

Strap change requires gentle removal of the lateral pins using a specialist tool (spring bar tool). Position the watch on a soft surface to avoid scratches. Insert the tool tip into the lateral hole of the lug, compress the spring slightly, then extract the pin. Repeat on the other side. Insert the pins into the new 20mm strap ensuring they enter perpendicularly, verify the strap is firmly fixed to the lugs before wearing. If uncertain, consult an authorised service centre or Casati Milano.

Yes, provided it is constructed with a 20mm lug width. Reference 118238-0119 corresponds to a specific case and movement model, but strap compatibility depends solely on lug measurement. Any professional 20mm strap—alligator, calf, shell cordovan, rubber, canvas—mounts without modification to the case. Milanostraps and Casati Milano offer comprehensive collections of 20mm straps tested for this case.

Durability depends on material and usage. High-quality alligator or calf with vegetable tanning resists 3-5 years of daily wear, developing natural patina and wear. Shell cordovan, thanks to fibre density, extends durability to 5-7 years. Accelerating factors: prolonged sun exposure, excessive perspiration, extreme temperatures. With seasonal rotation (two straps alternated), the lifespan of each extends significantly. Casati Milano provides 18-month warranty on manufacturing defects and offers refinishing and reconditioning services to extend strap lifespan.