Longines · Saint Imier

Strap for Saint-Imier Date 30 Stainless Steel

Takes 15 mm straps. Verified lug width, the straps that fit this model, and answers to the most common questions.

Lug width15 mm
Case diameter30 mm
ReferenceL2.563.4.72.6 (aka: L25634726)
FamilySaint Imier
MovementLongines caliber L595 Hours, Minutes, Seconds | Date
CaseStainless Steel

Spring bar

Swiss Standard universal spring bars

The right category for this model · 316L steel, all lug widths 13–26 mm

The Saint Imier L2.563.4.72.6 (aka: L25634726), seen from the bench

The Longines Saint-Imier L2.563.4.72.6 is a 30mm stainless steel dress watch featuring the automatic Longines L595 caliber with hours, minutes, seconds, date, and a 42-hour power reserve. The compact 11mm case thickness and 15mm lug width create balanced proportions suited to formal wear without bulk. Built on the heritage of the Saint-Imier valley since 1832, this model combines clean lines and essential functions for everyday elegance.

Frequently asked questions

What is the lug width of the Longines Saint Imier L2.563.4.72.6?

The lug width of the Longines Saint Imier L2.563.4.72.6 is precisely 15mm. To verify, insert a thin lever between the case and lug, measuring the internal space from shoulder to shoulder. This non-standard dimension requires bespoke straps to ensure proper fitment.

Which strap pairs best with the Longines Saint Imier L2.563.4.72.6?

We recommend alligator in warm tones (burgundy, dark brown) for a refined aesthetic, or vegetable-tanned calf for versatility and natural patina development. For sporadic wear, whiskey-coloured shell cordovan offers structural rigidity; in summer, a black rubber Tropic amplifies the case's minimalism. Choice depends on usage context and dial colour.

How do I change the strap on the Longines Saint Imier L2.563.4.72.6?

Position the watch with the caseback facing upward. Using a spring bar tool, press the internal elastic pin of one lug until it retracts. Extract the old strap and, whilst holding the pin retracted, slide the new one into place. Repeat on the opposite side. Ensure the strap is sized correctly for the 15mm lug width.

Can I use a standard aftermarket strap on the Longines Saint Imier L2.563.4.72.6?

No. Standard aftermarket straps are typically 16mm or 18mm. Since the Saint Imier L2.563.4.72.6 requires 15mm, an oversized strap will sit loose, risking slip-off and lug damage. Opt for custom straps from specialist artisans or compatible collections from milanostraps.it.

What is the lifespan of a leather strap on this watch?

A quality calf or alligator strap typically lasts 3–5 years with daily wear, varying by climate, personal perspiration, and maintenance. Shell cordovan, being more rigid, may reach 5–7 years. Bespoke straps from Casati Milano carry an 18-month guarantee against construction defects; natural leather wear is inevitable.

The next step

The right strap isn't chosen. It is built, together.

From the atelier appointment to delivery, every step is made for those who know that things done well take time. Rare leathers, one piece at a time, eighteen months of warranty.

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Casati Milano · Via XX Settembre 15, Milan · by appointment only