Strap for Conquest Chronograph White Ceramic Rubber

The Longines Conquest L3.661.4.86.2 features a lug width of 21mm. This measurement represents the distance between the two lugs (attachment points) where the strap is fitted. Accurate lug width measurement is essential to ensure the strap fits securely without twisting the case or creating excessive play.

We recommend alligator leather in cognac or black satin finish, which creates visual coherence with the mother-of-pearl dial. For versatile options, vegetable-tanned calf develops natural patina over time. For daily wear and humid environments, FKM rubber or nylon NATO straps offer durability whilst maintaining the model's sporty character.

Use a spring bar tool to gently press the small internal metal pin within the lug. When the pin retracts, the strap slides outward. To install a new strap, align the lug with the two holes on the case and push the pin until you hear a click. If unfamiliar with the procedure, we recommend consulting a certified watchmaker or Casati Milano atelier for precision installation.

Yes, any strap with a 21mm lug width is compatible with the Conquest L3.661.4.86.2. This opens access to thousands of aftermarket options, from fine leather straps to military NATO designs. Always verify the strap width is precisely 21mm to avoid case damage or excessive looseness. At milanostraps.it you'll find handcrafted, customisable straps in this size.

Durability depends on material and usage patterns. A handcrafted alligator or shell cordovan strap lasts 3-5 years under normal wear. Vegetable-tanned calf offers lower humidity resistance, so expect 2-3 years in high-moisture environments. The natural patina that develops is not deterioration but intentional material ageing. Casati Milano guarantees its handcrafted straps for 18 months.