Strap for Lyre 38.5 Automatic Stainless Steel / White / Bracelet

The lug width of the Longines Lyre L4.960.4.12.6 is 20 mm. This measurement is determined by the internal distance between the spring bar holes on the case. To measure precisely, remove the current strap using a spring bar tool, then measure the distance between the holes from one side to the other of the case, or measure the current strap directly from the inner hole of one spring bar to the other. A 20 mm strap is essential to ensure correct case positioning and the aesthetics of the original proportions.

For the Longines Lyre L4.960.4.12.6, vegetable-tanned alligator leather is the ideal material: its natural grain, the patina that develops over time, and its capacity to absorb light create perfect aesthetic synergy with the sobriety of the stainless steel case. Alternatively, vegetable-tanned calf leather offers a more articulated texture, whilst a NATO fabric in navy or charcoal grey provides practicality without sacrificing formal elegance. Your choice should respect the minimalist identity of the watch, avoiding straps with excessive decoration or vivid colours.

Changing the strap on the Longines Lyre L4.960.4.12.6 is a straightforward operation requiring a spring bar tool. Position the watch with the case facing upward, insert the flat tip of the tool into the spring bar hole, apply light pressure to compress the spring bar, and slide the old strap out of the hole. Repeat on the other side. To install the new strap, align the strap holes with the spring bars, insert them fully and ensure the spring bar is firmly positioned in the holes. Work slowly and with precision to avoid scratching the case.

Yes, a 20 mm aftermarket strap is perfectly compatible with the Longines Lyre L4.960.4.12.6, provided it is manufactured with quality materials and fitted with a robust buckle or deployant clasp. Artisanal straps in alligator or vegetable-tanned calf, crafted by master saddlers, often exceed the quality of original Longines straps, offering customisation in size, colour and finishes. Before purchasing, verify that the strap is certified at 20 mm and that the buckle is compatible with the case thickness (approximately 9-10 mm in the case of the L4.960.4.12.6).

The lifespan of a leather strap depends on the quality of materials, the type of tanning, and usage. A high-quality artisanal strap in alligator or vegetable-tanned calf, rotated with other straps, can last 5–10 years. Natural leather, especially if vegetable-tanned, develops patina and character over time, improving aesthetically. The area of contact with the wrist and around the buckle experiences the most wear. A leather strap requires occasional maintenance: dusting with a soft cloth, avoiding prolonged exposure to direct sunlight and moisture. Artisanal straps are often repairable (buckle replacement, extension), further prolonging the life of the piece.