Strap for Day-Date 40 Platinum - Fluted / Silver - Baguette

The lug width of the Day-Date 40 is precisely 20 millimetres. This measurement is taken as the perpendicular distance between the inner edges of the two lugs (the lateral pins that connect the dial to the bracelet or strap). Verification of this dimension is essential before purchasing an aftermarket strap, as even minimal discrepancies will compromise both the aesthetic balance and wearing comfort.

For the Day-Date 40 reference 228236-0002 in platinum, we recommend a dark anthracite grey or dark brown alligator strap, which dialogues naturally with the cool tone of the metal without competing chromatically. Alligator leather offers a silken grain and develops an elegant patina over time. As an alternative, vegetable-tanned calf leather permits a transition towards warmer tones and more rapid visible ageing.

The Day-Date 40 is fitted with standard 20mm lugs. To replace the strap, remove the lateral spring bars using a dedicated flat-lever tool, applying gentle lateral pressure. Insert the new strap by aligning the holes and reinsert the spring bars with a fluid motion until they lock into place. Should you be uncertain of the procedure, consult a qualified watchmaker: improper handling may damage the lug seats.

Yes. MilanoStraps offers a dedicated collection of artisanal 20mm straps, crafted from premium materials—alligator, vegetable-tanned calf, and shell cordovan—using traditional sartorial methods. Each strap is offered with an 18-month warranty against manufacturing defects. Compatibility is certified by the technical specifications of reference 228236-0002.

The longevity of a leather strap depends upon frequency of wear, environmental conditions, and material quality. Premium calf leather, worn daily, maintains structural integrity for 3–5 years. Alligator, being more resilient and impact-resistant, may extend this lifespan by 1–2 years. Patina development is a natural and desirable process: the burnishing that emerges narrates the history of wear. To preserve your strap, avoid prolonged water exposure, direct sunlight, and aggressive detergents.