Strap for PrimaLuna Quartz 34 Stainless Steel / Diamond / Silver - Roman / Bracelet

The lug width of the Longines PrimaLuna L8.114.0.71.6 is precisely 9mm. This measurement is defined by the distance between the two spring bar pins. A compatible strap must respect this exact dimension, as wider or narrower lugs will not fit correctly into the case attachment points. You can verify the measurement using a digital calliper, measuring from the inner edge to the inner edge between the two lugs.

For the PrimaLuna, we recommend alligator in cognac or dark brown tones, which creates a perfect aesthetic contrast with the stainless steel case. Vegetable-tanned calf leather offers a patina that evolves over time and develops character. Shell cordovan is the most durable and luxurious choice available. We advise against textile materials such as NATO or rubber straps, as these would compromise the classical identity of the model. The ideal buckle is brushed stainless steel, or alternatively a folding clasp that protects the strap from daily wear.

The strap on the PrimaLuna is changed by removing the spring bar pins that connect the case to the lugs. You will need a specific tool: a spring bar tool or a small flat-head screwdriver. Insert the tool into the thin slot beneath the pin, press gently to compress the internal spring, and the pin will slide out. Repeat on the other side. Insert the pin into the new strap by reversing the procedure. If you are uncertain, consult a professional watchmaker or the Casati Milano atelier to perform the operation safely.

Yes, quality aftermarket straps that are compatible with the 9mm lug width are perfectly suitable for the PrimaLuna. The key requirement is that the strap respects the exact 9mm width and that the construction quality is consistent with the watch's prestige. Milan Straps offers 9mm straps in alligator, calf leather, and shell cordovan, customisable in length, initials, and stitching colour. The Casati Milano atelier also creates bespoke straps tailored to your specifications, with your choice of leather and an 18-month guarantee.

The lifespan of a leather strap depends on the material and usage patterns. A quality vegetable-tanned calf strap typically lasts 3-5 years of daily wear before requiring replacement. Alligator and shell cordovan are more resistant and can last 5-7 years under normal conditions. Environmental factors such as sun exposure, humidity, and perspiration accelerate ageing. Proper maintenance—regular cleaning with a damp cloth and occasional conditioning with leather-specific oils—significantly extends strap life. A customised 9mm strap allows you to replace it easily whilst maintaining the aesthetic integrity of your watch.