Strap for Lyre 25 Stainless Steel / Silver

The lug width of the Longines Lyre L4.360.4.72.2 is precisely 13mm. This non-standard measurement is determined by the proportions of the 25mm case. Measurement should be performed using a digital calliper positioned inside the lug holes between the two spring bars, with a tolerance of ±0.5mm. Straps must be specifically dimensioned for this width, as 13mm is smaller than common sizes (14mm, 16mm, 18mm).

For the Longines Lyre L4.360.4.72.2, the ideal strap is alligator with vegetable tanning, which respects the fine construction and elegance of the model. Alligator offers natural grain, patina development over time, and chromatic depth coherent with the case's minimalist philosophy. Noble alternatives include vegetable-tanned calf leather (for smooth texture and natural luminosity) and shell cordovan in burgundy or dark brown shades (for dynamic contrast). For sportive use, gummed calf leather ensures practicality and wear resistance.

To change the strap, you will need specific tools: a spring bar tool and adequate lighting. Position the watch on a soft surface to avoid scratches. Gently insert the spring bar tool inside the lug hole from the underside, pushing upward to release the tension spring, then extract the strap. Repeat on the other side. Insert the new strap by aligning the lug with the lug hole, pressing until the spring bar is fully seated. Verify that both ends are perfectly anchored before wearing the watch.

Yes, quality aftermarket straps in 13mm size are available online, customisable in length, colour, initials, and thread type. Milano Straps offers a specialised collection of 13mm straps in alligator, calf leather, shell cordovan, and other noble materials, ready for dispatch. For a complete bespoke experience, the Casati Milano atelier creates custom straps according to aesthetic preferences, with direct leather selection, WhatsApp updates, and an 18-month product guarantee.

The durability of a leather strap depends on the tanning method and use pattern. An alligator or vegetable-tanned calf strap, if properly maintained (avoiding excess humidity and temperature fluctuations), lasts approximately 3–5 years of regular wear. Shell cordovan, owing to superior leather density, may last 4–7 years. Gummed calf leather has an estimated lifespan of 2–3 years for mechanical wear resistance. The patina that develops over time is a desirable feature, not a defect, and increases the strap's aesthetic value. Periodic maintenance and gentle cleaning with a damp cloth significantly extend the product's useful life.