Strap for Lyre 25 Automatic Stainless Steel

The lug width of the Longines Lyre L4.260.4.72.2 is precisely 13mm. This measurement, which deviates from industrial standards that typically prefer 14mm, 16mm, or 18mm, reflects the proportional design philosophy of this model. To verify strap compatibility, measure the internal distance between the two lugs of the case: it must be exactly 13mm with no tolerance.

For the Longines L4.260.4.72.2, alligator leather represents the optimal choice: its fine texture enhances the geometric architecture of the case without competing visually. Italian calf leather with vegetable tanning offers tactile softness and a patina that evolves naturally over time. For daily versatility, NATO fabric or water-resistant rubber straps ensure durability whilst maintaining balanced proportions. Selection depends on purpose: formal occasions favour dark brown alligator, casual wear prefers grey NATO or natural calf.

Strap replacement requires specific tools: a spring bar tool and a clean work surface. Position the watch horizontally, insert the spring bar tool into the small lateral slot of each lug, press slightly downward to release the internal spring, then remove the spring bar. Repeat for the opposite side. Align the new strap's holes with the lugs, reinsert the spring bars ensuring they click securely into place. Verify the strap is properly secured before wearing. If inexperienced, consult a professional watchmaker.

Yes, any strap with a 13mm lug width is compatible with the Longines Lyre L4.260.4.72.2. Milano Straps offers artisanal leather straps of exceptional quality (alligator, calf, shell cordovan) specifically designed for this measurement. Aftermarket straps provide the opportunity to personalise your watch according to style and occasion without compromising the chronometric integrity of the timepiece.

Leather strap longevity depends on material quality, frequency of use, and maintenance. Artisanal alligator or vegetable-tanned calf can last 3–5 years with regular daily wear, thanks to the protective patina that develops naturally. Shell cordovan, being denser, may reach 5–7 years. Critical factors include direct sunlight exposure (which desiccates leather), excessive moisture (which promotes mould), and perspiration. Simple maintenance – wiping with a soft cloth, avoiding prolonged water exposure, rotating straps – significantly extends longevity.