Strap for PrimaLuna 34 Quartz Moonphase Stainless Steel / MOP / Bracelet

The lug width of the Longines PrimaLuna L8.116.4.87.6 is 9 mm. This characteristic measurement delivers elegant and compact proportions on the 34 mm case diameter. It is essential to verify this specification before purchasing a compatible strap, as most standard straps are available in 10 mm, 12 mm, or 14 mm sizes, making the 9 mm width relatively rare and specialised.

The optimal strap depends on intended usage. For formal contexts, black or dark blue alligator heightens the lunar dial's elegance. For daily wear, vegetable-tanned leather in cognac tones develops a fascinating patina over time. For humid environments or travel, quality vulcanised rubber ensures functionality without compromising aesthetics. Bespoke selection at Casati Milano allows you to evaluate grain, texture, and tone according to your specific preferences.

Strap replacement employs a dedicated tool (spring bar tool) to remove the elastic pins connecting the strap to the case lugs. Position the watch securely, insert the tool gently into the lug space, lift slightly to release the spring bar, then slide the strap outward. Repeat on the opposite side. For mounting the new strap, reverse the procedure. If uncertain, Casati Milano offers professional guidance and assistance throughout the process.

Yes, aftermarket straps are compatible provided they respect the 9 mm lug width specification. Quality varies substantially: artisanal straps from Milano Straps ensure premium leather, robust stitching, and impeccable finishing, whilst many mass-market offerings present inferior materials and fragile seams. Investment in a quality strap extends the timepiece's aesthetic lifespan and preserves the perceived value of your Swiss watch.

Durability depends on wear intensity, climatic conditions, and leather quality. An alligator or vegetable-tanned calf strap, worn daily, typically lasts 3-5 years before requiring replacement. Prolonged exposure to sunlight, salt water, or perspiration shortens this duration. Straps crafted by Casati Milano carry an 18-month warranty and are constructed to evolve aesthetically over time, developing desirable patina rather than deteriorating rapidly.