Strap for Lyre Quartz 38.5mm White

The lug width of the Longines Lyre L4.859.4.12.2 is 20 mm. This measurement is critical to ensure the strap fits perfectly onto the 38.50 mm case, maintaining the geometric proportions originally conceived by Longines. A strap that is too narrow or too wide would distort the visual balance of the watch.

For the Lyre L4.859.4.12.2, alligator remains the most versatile and durable choice: its regular texture pairs naturally with the rational geometry of the case, and develops a noble patina over years of wear. Shell cordovan represents the alternative for those seeking greater plasticity and natural luminosity that evolves with time. Vegetable-tanned leather is ideal for those who prefer artisanal processes with more pronounced visual aging.

Strap replacement is accomplished via the lateral spring bars that connect the strap to the case. Using a dedicated spring bar tool or a fine screwdriver, insert the tip into the spring bar slot to release the tension, allowing you to remove the bar and old strap. The new 20 mm strap is then threaded through the two lugs of the case, and the spring bar is reinserted and locked into place. This operation can be performed independently or by a specialist watchmaker.

Yes, absolutely. Simply ensure that the strap is compatible with the 20 mm lug width. High-quality aftermarket straps—in alligator, calf leather, cordovan, vegetable-tanned leather, or rubber—are completely compatible and allow you to personalise your watch according to your style. Artisanal quality ensures that the new strap maintains (or enhances) the elegance of the original case.

The lifespan of a leather strap depends on the material and usage patterns. A good quality alligator strap typically lasts 5–8 years with daily wear. Shell cordovan, thanks to its structural density, can last 8–10 years. A calf leather strap with vegetable tanning usually lasts 3–5 years, as the leather is thinner and more subject to wear. Determining factors include exposure to water, perspiration, and sunlight. Regular maintenance (periodic cleaning and conditioning) significantly extends the life of the strap.