Strap for Equestrian 23.5 Black

The lug width of the Longines Equestrian L6.129.4.57.0 is 10mm. This measurement, also known as lug width or strap width, represents the distance between the two lugs on the case that hold the strap. It is a rare specification in contemporary timepieces, consistent with the proportionate design of this compact women's model.

The ideal strap depends on use and personal preference. For daily elegance, we recommend natural alligator with vegetable tanning or shell cordovan, which develops an attractive patina over time. For versatility, a NATO strap in cotton with a steel deployante allows quick changes. For humid environments or genuine equestrian activities, vulcanised rubber preserves the case structure. Visit https://milanostraps.it/collections/cinturini-orologi-per-misura-ansa-10mm for available options.

To change the strap, remove the watch from your wrist. Locate the two spring bars that pass through the case—one on each side. Using a dedicated tool (a pin remover or small flat-tipped screwdriver), gently push the spring bar from one side until it exits its seat. Remove the old strap. Align the new strap (10mm lug width) with the holes and reinsert the spring bars from the opposite side, ensuring they sit fully in their seats. Check that the strap is securely fastened before wearing the watch.

Yes, any strap with a 10mm lug width is physically compatible with the L6.129.4.57.0. However, for complete compatibility, it is essential that the strap is calibrated to an appropriate length for a female wrist (typically 175–210mm total assembled length). Straps from milanostraps.it are available in various customisable lengths to guarantee a perfect fit.

The lifespan of a leather strap varies depending on the material and daily use. Natural alligator with vegetable tanning maintains functionality for 4–7 years with ordinary care (drying after exposure to moisture, avoiding permanent creases). Shell cordovan, being denser, can last 8–12 years whilst developing a desirable patina. A vegetable-tanned calf strap, being softer, requires replacement every 3–5 years if worn daily. Casati Milano straps include an 18-month guarantee against manufacturing defects.