Strap for Conquest 35 Quartz Stainless Steel Diamond Bezel

The lug width is 17 millimetres, a non-standard dimension characteristic of this 35mm case family. To verify it, remove the original strap and measure the inner shoulder of the spring bar using a calliper. This precise measurement is essential when purchasing compatible straps online.

Dark brown or havana alligator enhances the silver dial without compromise. Black or burgundy calf leather guarantees formal elegance. Shell cordovan represents the pinnacle of natural patina and durability over time. A green or navy NATO references the model's sporting heritage authentically. Rubber is the technical choice for humid environments.

The operation requires a spring bar tool (or a blunt knife tip) to push the spring bar located beneath the lug mount. Position the watch with the lug in suspension, work gently to avoid scratching the case, remove the old strap, insert the new one, and allow the spring bar to snap into place. Avoid impact on the case during the procedure.

No, 17 millimetres is the specific lug width of the Conquest L3.280.0.57.6 and only a handful of other Longines models of the same line and diameter. It is not compatible with watches from other manufacturers unless by coincidence. Always verify measurements before purchasing aftermarket straps.

With moderate use (5–6 days weekly) and basic maintenance (gentle cleaning with a slightly damp cloth, air drying, avoiding very humid environments), an alligator or calf strap lasts 24–36 months. Shell cordovan can exceed 4 years of active wear. Natural patina is a sign of harmonious ageing, not structural failure. Rotating multiple straps for the same watch significantly extends their lifespan.