Strap for Saint-Imier Date 38.5

The lug width of the Longines Saint Imier L2.766.4.52.3 is 20 mm. This measurement corresponds to the distance between the inner spring bars and is the specific standard for Saint-Imier models with a 38.50 mm case diameter. It is essential to verify this measurement before purchasing an aftermarket strap to ensure precise fitting and optimal security.

For the Saint Imier L2.766.4.52.3, straps in alligator or vegetable-tanned calf leather are recommended, maintaining the Swiss dress watch aesthetic. Cognac or havana-toned alligator ensures versatile elegance, whilst embossed calf offers a more casual appearance. For summer variations, beige or havana calf ensures coherent seasonal transitions. Bordeaux shell cordovan represents a premium choice for those who appreciate tactile sophistication.

The strap is changed by releasing the spring bars (spring-loaded pins) located at the case extremities. Using a dedicated tool (spring bar remover), press gently downward to extract the pin from its housing and remove the strap. Repeat on the opposite side. To fit the new strap, insert the end into the lug and, using the tool, snap the spring bars into position. Ensure the strap is secure and centred on the case before wearing the watch.

Yes, any quality strap with a 20 mm lug width is compatible with the Saint Imier L2.766.4.52.3. However, it is essential that the strap is constructed to precision standards, with lugs that adapt perfectly to the geometry of the steel case. Bespoke artisanal straps guarantee superior fit compared to generic models, as they are individually verified and crafted using selected leathers and sartorial techniques.

The lifespan of a leather strap depends on the tanning quality, intensity of use, and maintenance. An alligator or vegetable-tanned calf strap, subject to regular care (monthly cleaning and semi-annual conditioning), lasts 3–5 years under daily wear conditions. Shell cordovan, owing to its structural density, can exceed 7 years. The critical factor is prolonged humidity exposure and contact with saline sweat, which accelerates ageing. Casati Milano straps include an 18-month guarantee against manufacturing defects.