Strap for PrimaLuna Quartz 26.5 Stainless Steel / MOP / Bracelet

The lug width of the Longines PrimaLuna L8.110.4.87.6 is precisely 6mm. This dimension is characteristic of the model and was deliberately chosen by Longines to maintain harmonious proportions on the 26.50mm case. Accurate measurement using a digital calliper is essential: insert the calliper into the lug hole from the inside of the case, perpendicular to the lug length.

Premium materials are recommended for the PrimaLuna L8.110.4.87.6, including alligator from Italian or French vegetable-tanned tanneries, high-quality Italian shell cordovan, or fine-grained calf leather. Alligator is the classic choice for this case, as its regular texture does not visually overwhelm a watch with delicate proportions. Shell cordovan offers a more versatile alternative for those who appreciate a patina that develops over time.

Strap replacement requires specific tools: a spring bar removal tool and a small file or screwdriver. Position the watch on a stable surface, locate the suspension pins that pass through the lug slots, and gently push the pin with the tool to release the strap. Insert the new strap by passing the pin through the new slots until it clicks into place. If you are uncertain about the procedure, entrust the task to a professional strap specialist such as Milano Straps or the Casati Milano atelier.

No, it is not advisable. The Longines PrimaLuna L8.110.4.87.6 requires a strap with a lug width of exactly 6mm. Generic aftermarket straps rarely meet this stringent manufacturing tolerance, resulting in poor fit, undesired lateral movement, or damage to the case lugs. It is preferable to purchase straps specifically designed for 6mm lug width from specialised suppliers such as Milano Straps.

Longevity depends on the material and usage patterns. A quality alligator or shell cordovan strap, if properly maintained and not subjected to excessive stress, can last 5-7 years before replacement is necessary. Fine calf leather typically ranges from 3-5 years. Factors such as sun exposure, perspiration, humidity and frequency of use influence ageing. The Casati Milano atelier offers an 18-month warranty on its craftsmanship, during which any defects in stitching or finishing are corrected free of charge.