Strap for La Grande Classique Automatic 25 Stainless Steel / White

The lug width of the Longines La Grande Classique L4.398.4.12.6 is 13mm. This is a specific and reduced measurement, proportioned to the compact 25mm case diameter. Any compatible strap must have exactly 13mm width at the lug passage to fit the spring bars without lateral play.

For the Longines La Grande Classique L4.398.4.12.6, we recommend aniline alligator in dark grey tones (harmonises with the dial grain), vegetable-tanned calf in light tan (develops authentic patina), or silk-raw NATO for a practical and lightweight solution. Avoid glossy synthetic leathers that conflict with the satin-finished dial character.

To change the strap you need minimal tools: a plastic or bone spatula and the spring bars supplied with the new strap. Insert the spatula beneath the lug knot to lift the spring bar from its seat, remove the old strap, then align the new strap to the holes and press the spring bar into position until it clicks. Avoid steel hammers or tools that risk scratching the stainless steel case.

Any artisanal strap with a 13mm lug width is compatible with the Longines La Grande Classique L4.398.4.12.6. On milanostraps.it you will find a selection of straps in Italian leather, alligator, textile and rubber, all available in 13mm width and customisable in length, initials and thread type. The Casati Milano atelier also offers bespoke creation with direct selection of leathers.

The lifespan of a leather strap depends on usage and maintenance. Quality vegetable-tanned calf, worn daily with care (avoid baths, hot water, direct perfume), has an average life of 4–6 years. Aniline alligator tends to last longer (6–8 years) due to the more robust leather structure. Once worn, the strap can be regenerated with new stitching at the atelier. Milanostraps.it straps include an 18-month warranty against manufacturing defects.