Strap for Conquest Quartz 36 Stainless Steel - Diamond / Black

The Longines Conquest L3.401.0.57.6 features a lug width of 17mm. This is the internal distance between the two pins that mount the strap to the case lugs. Always verify this measurement before purchasing an aftermarket strap, as an improper fit results in excessive play or complete incompatibility.

For the Conquest, consider: alligator in cognac or tan for formal elegance; shell cordovan for those seeking natural patina development; vegetable-tanned calf as a balanced choice; canvas NATO for versatile sportiness; rubber with deployante clasp for summer wear. Selection depends on intended use context and personal aesthetic preference.

You will require a spring bar tool. Position the tool underneath the spring bar from the strap end, apply inward pressure, and extract the pin. Repeat at the opposite lug. Insert the pins into the new strap by aligning them with the case lug holes, and verify secure seating. If uncertain, consult a professional watchmaker.

Yes, any strap with a 17mm lug width is compatible. Online retailers and specialist ateliers (such as Casati Milano) offer options in alligator, shell cordovan, calf, NATO and rubber materials. Always confirm that the lug width is 17mm and that the total length is proportionate to your wrist.

Lifespan varies with material and wear patterns. Quality alligator lasts 3–5 years with regular rotation; shell cordovan can exceed 7–10 years whilst developing compelling patina; vegetable-tanned calf lasts 2–4 years. Exposure to water, perspiration, and direct sunlight diminishes longevity. Rotating among multiple straps significantly extends the life of each.