Strap for La Grande Classique Automatic 25 Stainless Steel / Yellow Gold PVD / White

The lug width of the Longines La Grande Classique L4.398.3.12.7 is 13 millimetres. This measurement refers to the space between the lugs of the case and is essential for selecting compatible straps. To verify precisely, use a digital calliper positioned perpendicularly between the two lugs, without applying pressure to the case.

The best strap depends on the intended use. For formal and evening occasions, alligator in cognac, bordeaux, or black shades offers supreme elegance and regular grain texture. For versatile daily wear, vegetable-tanned calf leather ensures durability, develops patina over time, and provides comfort. Casati Milano's atelier recommends personalising your choice based on context of use and personal aesthetic sensibility.

Changing the strap requires the use of a spring bar tool. Carefully remove the springs from the lugs by inserting the tool into the designated slot and levering gently. Once the springs are free, remove the pins and the old strap. Position the new strap, reinsert the pins aligning them perfectly, and ensure the springs engage correctly into their slots. If you are not experienced, consulting a qualified watchmaker is the safest choice.

Yes, all straps with a 13-millimetre lug width are compatible with the L4.398.3.12.7. Milano Straps offers a complete collection of handcrafted 13mm straps in various materials: alligator, calf, shell cordovan, and technical rubber. Each strap is customisable in length, stitching colour, and buckle type, with rapid dispatch.

The lifespan of a leather strap depends on the type of tanning, frequency of use, and climatic conditions. A high-quality alligator or vegetable-tanned calf strap typically lasts between 3 and 5 years with daily use. Straps crafted by the Casati Milano atelier include an 18-month guarantee and are constructed using artisanal techniques that extend longevity. Proper maintenance—drying after water contact, avoiding direct heat sources—keeps the strap in optimal condition over time.