Strap for PrimaLuna Automatic 26.5 Stainless Steel / Diamond / White / Bracelet

The lug width (misura ansa) of the Longines PrimaLuna L8.111.0.16.6 is 6mm. This measurement is model-specific and represents the total width of the attachment point between case and strap. Measuring is straightforward: use a digital calliper positioned at the deepest point of a lug and verify the reading is 6mm ±0.2mm tolerance.

Recommended materials include: alligator (balanced grain texture, visual contrast with steel), vegetable-tanned calf leather (patina that ages beautifully), shell cordovan (controlled rigidity and natural lustre with minimal maintenance), and NATO fabrics (functional versatility). Selection depends on intended use and desired aesthetics.

The strap is changed by removing the spring bar connecting the case lug to the strap. Use a dedicated spring bar tool to compress the internal spring and slide the bar outward. Insert the new strap by aligning the lug width correctly with the case lugs, then reinsert the spring bar. Ensure the strap is fully secured before wearing the watch.

Yes, it is fully compatible with artisanal aftermarket straps, provided the lug width is exactly 6mm. Specialised manufacturers produce custom straps for this reference, offering leather selection, colour, thickness, and finishing details. Always verify dimensions prior to purchase.

The lifespan of a natural leather strap depends on intensity of use and care. Under normal daily-wear conditions, a quality strap (alligator, calf, shell cordovan) typically lasts 3-5 years. Vegetable-tanned leather develops patina and character over time. Keeping the strap dry, protected from standing water and excessive heat, significantly extends its useful life.