Strap for Symphonette S Black

The lug width of the Longines Symphonette L2.304.4.57.0 is 8mm. This is a specific measurement for watches in this feminine collection. To verify, measure the internal distance between the two lugs on the case using a digital calliper: it must correspond exactly to 8mm. Do not confuse this measurement with the case diameter (16mm) or overall case width.

The best material depends on intended use. For formal elegance, we recommend alligator in cognac brown or black: it develops patina over time and maintains correct visual proportions through its natural softness. For versatile daily wear, Italian calfskin with vegetable tanning offers comfort and sustainability. For collectors appreciating dramatic ageing, shell cordovan is the supreme choice. For sporty or summer contexts, FKM rubber or technical silicone ensure water resistance and minimal maintenance.

Strap replacement requires a specialised tool called a spring bar tool. Position the watch on a soft cloth with the case facing down. Insert the tip of the spring bar tool into the lateral spaces of the lug, gently pushing toward the centre to compress the spring. Once compressed, the strap slides out of the case. Repeat on the opposite lug. Insert the new strap by aligning the keepers with the attachments, then release pressure to secure it firmly. Verify that both lugs are completely engaged before wearing the watch.

Any strap with an 8mm lug width is compatible with the L2.304.4.57.0. Browse the <a href="https://milanostraps.it/collections/cinturini-orologi-per-misura-ansa-8mm">8mm strap collection</a> at Milano Straps, available in various leathers (alligator, calfskin, shell cordovan) and finishes. The Casati Milano atelier also offers bespoke personalisation services, allowing direct selection of leathers, embroidery of initials, and choice of stitching thread according to your aesthetic preferences.

Strap longevity depends on material and intensity of use. Quality alligator, with regular maintenance (avoid prolonged moisture, use conditioning cream every 6-8 months), lasts 5-8 years of daily wear. Italian vegetable-tanned calfskin, being softer, has similar longevity but requires more frequent maintenance. Shell cordovan, if properly cared for, can last 10+ years whilst developing fascinating patina. FKM rubber straps last 3-5 years before degradation begins. All straps crafted by Casati Milano enjoy an 18-month warranty.