Strap for Elegant Collection 25.5 Automatic Stainless Steel / White / Bracelet

The lug width of the Longines Elegant L4.309.4.12.6 is 13 mm. This is the internal distance between the two spring bars where the strap is inserted. It is essential to verify this measurement before purchasing a compatible strap, as even a 1 mm difference would result in mechanical and aesthetic incompatibility.

For this elegant 25.5 mm model, alligator represents the formal choice par excellence, enhancing the geometry of the dial. Vegetable-tanned calf leather offers versatility and develops a natural patina over time. NATO in cotton-silk creates a casual-elegant effect. Natural rubber is ideal for those seeking technical functionality without compromises in grip. The choice depends on the intended use context.

The L4.309.4.12.6 is fitted with spring bars (removable pins). To change the strap: use a dedicated tool (spring bar tool) to compress the pin and slide it horizontally out of the lug. The new 13 mm strap is inserted in the same way in the opposite direction, ensuring that the pin clicks firmly into position. If you do not have the tools, a professional watchmaker can complete the replacement in minutes.

Yes, the L4.309.4.12.6 is fully compatible with quality aftermarket straps provided they respect the 13 mm lug width. Custom-made straps by Casati Milano, for example, are crafted to Longines specifications and guarantee perfect mechanical and aesthetic compatibility. We recommend choosing artisanal quality straps to preserve the value of the timepiece.

The lifespan of a leather strap depends on the material and usage. A high-quality calf leather with vegetable tanning lasts 3-5 years under normal daily wear conditions. Alligator, being a denser leather, reaches 5-7 years. Durability increases significantly if the strap is removed at night and not constantly exposed to humidity, sweat or direct sunlight. Proper maintenance and rotation with other straps substantially extends the product's lifespan.