Strap for Lyre 25 Automatic Yellow

The lug width of the Longines Lyre L4.260.2.32.8 is 13mm. This dimension represents the standard construction specification for Longines ladies' mid-range models. It is an uncommon size in the aftermarket strap industry, making it essential to verify this specification before purchasing a compatible strap. Accurate measurement is performed by placing a digital calliper between the lug holes of your original strap, measured centre-to-centre.

The ideal choice depends on intended use and personal preference. For formal applications, vegetable-tanned alligator represents the finest solution, offering natural grain and a patina that evolves over time. Vegetable-tanned calf leather provides versatility and consistent grain. For sports or summer contexts, a butadiene rubber strap ensures maximum hygiene and practicality. All materials must feature a 13mm lug width and, preferably, a satin steel deployante clasp that mirrors the case finish.

The Lyre strap is secured using spring bars threaded through the lug holes. To remove it, obtain a thin toothpick or dedicated spring bar tool. Insert the tool into the small lateral hole of the spring bar and apply gentle pressure until it disengages. Repeat on the opposite side. To install the new 13mm strap, align the lug holes and reinsert the spring bars until they click firmly into position. Avoid forcing: the mechanism should operate smoothly and without resistance.

Yes, compatible aftermarket straps exist, though the 13mm lug width is a specialised dimension not offered by all standard manufacturers. Milano Straps maintains a comprehensive collection of 13mm artisanal straps, crafted in alligator, vegetable-tanned calf, shell cordovan and rubber. These straps are specifically engineered for the Lyre and other Longines models sharing the same lug width, guaranteeing constructive and aesthetic compatibility.

Strap longevity depends on construction quality, material type and intensity of use. An artisanal strap in alligator or vegetable-tanned calf, crafted using traditional techniques, may last three to five years under daily wear before requiring replacement due to natural wear or aesthetic deterioration. The patina developing over time is entirely normal and prized by knowledgeable owners. Proper maintenance—drying after moisture exposure, avoiding prolonged immersion—substantially extends service life. Rubber straps demonstrate superior resistance to environmental factors but may lose elasticity after five to seven years of continuous use.