Strap for PrimaLuna Automatic 26.5 Stainless Steel / Silver - Roman / Bracelet

The lug width is precisely 6mm, the space between the spring bar pins that hold the leather strap in place. To measure correctly, position the caliper perpendicularly to the long axis of the case, from inner lug to inner lug. This width is not an industry standard, therefore requires a bespoke or personalised strap for immediate compatibility.

Alligator with fine grain is the classic dress choice for its subtle texture and aesthetic neutrality. For daily wear with a patina that evolves over time, vegetable-tanned calf leather (Rancia, Hermès) is ideal. For extreme durability and moisture resistance, shell cordovan is the solution. For summer or casual use, textile NATO or FKM rubber ensure practicality without compromise.

The Longines PrimaLuna uses a standard spring bar to attach the strap to the case. With a spring bar tool (a specific two-ended implement, available from watch retailers), gently press one of the two pins to release the spring, allowing the old strap to be removed and the new one inserted. The operation takes less than two minutes for experienced users; it is advisable to ask a watchmaker if you fear damaging the case.

Yes, Milan Straps produces aftermarket straps specifically for 6mm lug width, made from alligator, calf, shell cordovan and synthetic materials, customisable in length, initials and stitching colour. Casati Milano, an associated sartorial atelier, also creates bespoke versions with personal leather selection and 18-month warranty.

A quality alligator or calf strap, with vegetable tanning, has an average lifespan of 3-5 years of daily use, depending on frequency and climate conditions. Shell cordovan, thanks to its density and memory, can last 5-8 years. Natural patina (discolouration, grain refinement) is part of the aesthetic ageing process. Regular maintenance (cleaning with a soft cloth, conditioning with natural wax every 6 months) significantly extends the strap's life.