Strap for Saint-Imier Date 30 Stainless Steel

The lug width of the Longines Saint Imier L2.563.4.59.3 is 15mm. This measurement is essential for selecting compatible straps. To verify it, simply measure the distance between the inner edges of the two metal lugs on the case using callipers or a ruler. A strap with a different lug width will not fit correctly on your watch.

The choice depends on the intended use. For formal occasions, we recommend alligator in black or dark brown with a steel deployante. For daily wear, calf leather with vegetable tanning allows a natural patina to develop over time and offers superior comfort. A rubber strap is ideal for those seeking practicality without aesthetic compromise. The 15mm proportion adapts perfectly to the 30mm case diameter, creating visual harmony regardless of material chosen.

Remove the watch from your wrist and place it face-down on a soft surface. Using a spring bar tool, gently push the spring bar that supports the lug towards the opposite side, creating space to slide out the old strap. Repeat on the other lug. To install your new 15mm strap, align the holes with the lugs and reinsert the spring bar from the outside inward, ensuring it is fully seated on both sides.

Yes, absolutely. Any strap with a 15mm lug width is compatible with your L2.563.4.59.3. High-quality aftermarket straps in alligator, calf, shell cordovan or vegetable-tanned leather offer an opportunity to personalise your watch whilst maintaining technical compatibility. Milano Straps supplies certified straps, customisable in size, colour and details.

Durability depends on the material and usage. A quality alligator strap can last 5–7 years with daily wear and proper maintenance. Calf leather typically shows visible wear after 3–4 years, but this contributes to the characteristic patina of vegetable-tanned leather. Shell cordovan, due to its structural density, can exceed 10 years of use. Rubber, if of good quality, maintains elasticity for approximately 3–5 years. To extend strap life, avoid prolonged water exposure and store it in a dry place when not worn.