Strap for Day-Date 36 Yellow Gold Fluted / Oyster / Champagne MOP Computer

The lug width of the Rolex Day-Date 36 118238-0311 is 20 millimetres. This is the distance between the pins that connect the strap to the case, a constant specification across all examples of this reference. It is essential to verify this measurement before ordering an aftermarket strap to ensure perfect compatibility.

Alligator is the traditional choice par excellence, thanks to the natural texture of the reptile that harmonises with the lustre of yellow gold. Calf leather represents the most versatile alternative, ideal for those who prefer marked ageing. Shell cordovan in burgundy-brown tones offers refined and warm contrast with the gold. Rubber or NATO straps are functional but conflict with the formal elegance of the watch.

The strap is changed by removing the two pins that connect the strap to the case: use a dedicated tool (spring bar tool) to extract the pin from one side, then gently slip off the old strap and insert the new one. It is important to verify that the new strap has the correct lug width (20mm) and that the pins are perfectly aligned during installation. If you are unsure, consult a professional.

Yes, you can use a high-quality aftermarket strap, provided the lug width is exactly 20 millimetres and the strap is made from noble materials (fine leather, alligator, calf). A personalised bespoke strap allows you to express the character of the watch whilst maintaining technical compatibility. Casati Milano offers custom straps with an 18-month guarantee on manufacturing defects.

Durability depends on frequency of use and material quality. A high-quality alligator or shell cordovan strap with vegetable tanning can last 3-5 years of daily wear before requiring replacement. Calf leather, which is more delicate, may require a change every 2-3 years if exposed to excessive moisture. Proper maintenance (protection from excess humidity, periodic cleaning) significantly extends strap life.