Strap for Lyre 25 Stainless Steel / White / Bracelet

The lug width of the Longines Lyre L4.360.4.12.6 is 13 millimetres. This is a non-standard measurement, rarely found in modern mass-produced watch straps, reflecting the compact proportions of the 25mm case. To verify this measurement, use a digital calliper positioned between the metal lugs, ensuring the tool is parallel to the case.

For the Lyre, we recommend straps in fine-grained alligator in cognac brown, deep black or dark brown tones, or vegetable-tanned calf leather that develops a fascinating patina over time. An elegant alternative is shell cordovan, which begins polished and assumes a deep patina with wear. Your choice should reflect the dial tone: pure white dials pair well with brown, cognac or black; champagne or cream dials benefit from aged shell cordovan.

The strap is replaced by removing the spring bars from both sides of the case using a dedicated spring bar tool. Gently press the metal pin inward toward the case to release tension, then remove the old strap. Insert the new strap, aligning it with the lug holes, and reposition the metal pins until they click securely into place. This procedure requires care to avoid scratching the case; specialist workshops perform this operation at no additional cost.

Yes, the Lyre L4.360.4.12.6 is fully compatible with any quality strap featuring a 13-millimetre lug width. At milanostraps.it you will find a selection of artisanal 13mm straps ready for dispatch, or you can request a custom production at Casati Milano atelier, where you will select leather, colour, stitch thread and specific length for your wrist.

The lifespan of a leather strap depends on daily wear and material quality. An alligator or vegetable-tanned calf strap, if worn daily, maintains optimal functionality for 3–5 years before requiring replacement, although patina develops progressively within the first months of use. Shell cordovan straps tend to last longer due to leather density. Proper maintenance—avoiding prolonged water exposure and occasionally applying a conditioner—significantly extends the working life of the strap.