Strap for PrimaLuna Automatic 30 Two Tone Pink

The lug width of the Longines PrimaLuna L8.113.5.78.6 is precisely 8mm. This measurement represents the distance between the upper and lower lugs on the case, and it is the fundamental parameter for purchasing a compatible strap. To verify, insert a ruler between the two attachment points: a 7.5mm or 8.5mm strap would create assembly difficulties and result in an insecurely fixed spring bar.

Given its nature as a horological jewel, the Longines PrimaLuna L8.113.5.78.6 pairs ideally with genuine alligator or vegetable-tanned calf leather. Alligator offers a regular grain and discreet texture, perfect for formal occasions. Vegetable-tanned calf develops a natural patina over time, becoming an evolutionary companion to your watch. For summer or casual contexts, NATO fabric or FKM rubber maintain elegance without compromise. We do not recommend synthetic leathers: a timepiece of this calibre deserves materials that age honourably.

Changing the strap on the L8.113.5.78.6 requires a spring bar tool (a double-pronged needle-like instrument). Place the watch face-down on a soft surface. Insert one of the two prongs of the tool into the small lateral hole of the lug spring, pressing gently downwards: the spring will retract, releasing the pin. Remove the old strap and position the new one, ensuring the lugs align correctly. Repeat on the other lug. Avoid sudden movements: the lugs on a 30mm case are delicate.

Yes, any strap with an 8mm lug width is compatible with the PrimaLuna L8.113.5.78.6, regardless of brand. Online, you will find artisanal 8mm straps ready for shipment, customisable in length, initials, and stitching thread. What matters is verifying that the strap is specifically dimensioned for 8mm and that the buckle or deployant supports the case diameter (a 30mm case implies relatively narrow lugs). Always consult the strap's technical specifications before purchase.

A vegetable-tanned leather strap, if subjected to daily use and properly maintained, retains structural integrity for approximately 3–4 years on average. Longevity depends on exposure to sunlight, heat, humidity, and mechanical stress. An alligator strap, being more resistant, may last 5–6 years. To prolong its lifespan, avoid prolonged water immersion, keep the strap away from direct heat sources, and occasionally hydrate it with natural beeswax. Casati Milano's warranty covers all straps for 18 months against manufacturing defects.