Strap for Day-Date 36 Yellow Gold - Diamond / Champagne - Baguette / President

The lug width of the Day-Date 36 128348RBR-0080 is precisely 20 millimetres. This specification is fixed: the spring bar pins that attach the strap to the case are exactly 20mm apart. To verify, measure the distance between the two lugs with a calliper, viewing the watch from the side.

There is no single answer; it depends on your use case and aesthetic preference. Alligator remains the formal choice, offering visual continuity with yellow gold through its regular grain. Italian calf leather with vegetable tanning provides natural ageing parallel to the patina of gold. Shell cordovan delivers exceptional durability. Vulcanised rubber suits contemporary environments or daily wear.

Strap replacement requires specific tools: a spring bar tool and a stable work surface. Position the watch sideways, locate the small hole on the inner side of the upper lug, insert the tool to depress the pin and release the strap. Repeat for the lower lug. Install the new strap following the reverse procedure. We recommend having a qualified watchmaker perform this if you lack experience, to avoid damage to the case.

Yes. Any strap with a 20mm lug width is technically compatible. However, construction quality matters significantly: artisanal straps reduce movement and vibration, protecting the spring bar pins from mechanical stress. A cheap strap could damage the pins within months. We recommend choosing a maker who understands the aesthetic proportions between the 36mm case diameter and 20mm lug width.

Durability depends on material, tanning method, and usage. A naturally tanned alligator strap, worn daily, typically lasts 3-5 years before repair or replacement. Vegetable-tanned calf tends to last 4-6 years, developing characteristic patina. Shell cordovan can exceed 7-8 years. Vulcanised rubber ranges from 5 to 10 years. Factors shortening strap life: prolonged direct sunlight exposure, perspiration (particularly on the wrist-facing side), humidity, and excessive air conditioning. Periodic maintenance with natural protective wax significantly extends useful life.