Strap for Day-Date 36 Yellow Gold Diamonds / President / Bull's Eye

The lug width of the Rolex Day-Date 36 reference 118388-0129 is 20 millimetres. This measurement is determined by the distance between the inner base of the two lugs on the case. It is essential to measure accurately before purchasing an aftermarket strap, as an incorrect measurement results in structural incompatibility and installation failure.

Louisiana alligator represents the most classic and harmonious choice for the Day-Date 36 in yellow gold 18k. The natural grain of crocodile creates a play of light that dialogues perfectly with the precious metal. Alternatively, Italian calf with vegetable tanning ages elegantly and develops patina over time. Natural FKM rubber offers versatility for daily wear whilst maintaining aesthetic proportions.

The strap is attached to the case via spring bars (spring-loaded metal rods) positioned on each side of the lugs. Use a dedicated tool (spring bar tool) to compress the rod and remove it from its seat. Once the old strap is removed, insert the new spring bar into the lug holes and allow them to snap into position. The operation requires care to avoid scratching the case: we recommend having a professional perform this if you lack experience.

No, provided it respects the 20-millimetre lug width and is manufactured using appropriate materials and construction techniques. A certified aftermarket strap produced to elevated quality standards causes no damage to the case. However, avoid inexpensive straps or those of incorrect width, as they may cause adhesion problems and damage the case pins.

A high-quality leather strap (alligator, calf, shell cordovan) has a lifespan of between 3 and 5 years with moderate daily use. Longevity depends on frequency of use, environmental conditions (humidity, heat), maintenance (periodic cleaning) and exposure to UV rays. Mindful maintenance and rotation with alternative straps significantly extend the useful life of an individual strap.