Strap for PrimaLuna Automatic 26.5 Stainless Steel / Blue MOP / Bracelet

The Longines PrimaLuna L8.111.4.98.6 features a lug width of exactly 6 mm. This dimension is specific to the geometry of the compact 26.50 mm case and represents a rarity in watchmaking. To verify with precision, use a digital calliper positioned between the two lateral lugs without applying pressure. A strap with tolerance within ±0.1 mm will install friction-free and ensure natural movement.

The most faithful choice for the PrimaLuna's elegant character is alligator leather, whose regular scales create visual coherence with the dial's sobriety. Alternatively, vegetable-tanned calf offers a patina that evolves naturally over time, acquiring character with age. For daily versatility, a NATO strap in nylon with robust weave maintains discrete elegance, whilst FKM rubber is ideal for warm climates without aesthetic compromise.

Remove the strap using a dedicated spring bar tool. Position the watch on a soft, well-lit surface. Insert the tool's thin tip into the lateral hole of the spring bar to compress the internal spring, then extract the old strap whilst maintaining pressure. Repeat on the second lug. For installation, align the new strap's ends with the holes and insert the spring bars whilst compressing the spring. Verify that the strap sits symmetrically and that both bars are fully seated.

Yes, provided the strap is engineered specifically for 6 mm lug width. An incompatible strap (5.8 mm or 6.2 mm) will generate friction on the spring bars and accelerated wear. Choose artisan straps crafted to commission to ensure precise tolerances. Milan Straps offers 6 mm-compatible straps ready for shipment or bespoke customisation at the Casati Milano atelier with 18-month warranty.

The lifespan of a leather strap depends on use, climate and tanning method. A quality alligator or calf strap with daily wear maintains structural integrity for 2 to 4 years. Vegetable-tanned leather develops a natural protective patina that extends longevity. Humidity, perspiration and direct sunlight exposure accelerate ageing. Artisan straps from Milan Straps carry an 18-month warranty against manufacturing defects; actual longevity depends on maintenance and frequency of use.