Strap for Lyre 35 Automatic Stainless Steel

The lug width of the Longines Lyre L4.860.4.11.2 is precisely 18 millimetres. This measurement is critical when purchasing a compatible strap: a lug width that differs causes friction on the case lugs and deteriorates the finishing. To verify correctly, position a ruler between the metal pins holding the strap and read the distance in millimetres.

We recommend an alligator strap in vegetable tanning, which develops natural patina over time and maintains harmonious visual proportions with the 35-millimetre case. Alternatively, mother-of-pearl calf leather offers luminosity to the dial, whilst shell cordovan guarantees structural rigidity and elegance without excess. For daily wear, a thick canvas NATO is the versatile choice. Avoid synthetic leather straps, which do not breathe and age poorly.

The process is straightforward: position the watch face-down on a soft cloth. Locate the metal pins on either side holding the strap. Using a spring bar tool or small screwdriver, push the pin towards the centre of the case to compress the internal spring, then remove the old strap. Insert the new strap, aligning the holes, and release the pin until it clicks into place. Verify that the strap is secured firmly on both sides before wearing the watch.

Yes, provided the lug width is exactly 18 millimetres. A quality aftermarket strap—in alligator, calf, or shell cordovan—often improves the wearing experience compared to the original, offering greater personalisation, superior materials, and artisanal finishing. Choose straps from specialist suppliers that certify compatibility and employ traditional construction methods, such as hand stitching and premium leather selection.

Durability depends on leather quality and frequency of use. Premium alligator or shell cordovan lasts 5–7 years with daily wear, developing natural patina. Less resilient calf leather lasts 3–4 years. Wear increases if exposed to constant humidity or intense perspiration. To extend lifespan, rotate multiple straps and allow the strap to air-dry after hot days. A quality artisanal strap, if well maintained, can last up to 10 years whilst retaining aesthetic functionality.