Strap for Conquest Classic Quartz 34 Stainless Steel / Ceramic / Diamond / Black

The lug width of the Longines Conquest Classic L2.387.0.57.6 is 18 millimetres. This measurement is critical: it represents the internal distance between the two metal pins that attach the strap to the case. A strap with a lug width smaller or larger than 18mm will not fit correctly. When ordering a replacement strap, always verify that the supplier specifies "18mm lug width" to ensure perfect compatibility.

For the Conquest Classic 36mm, we recommend natural alligator leather with marked vertical grain to emphasise discrete sportiness, or box calf in cognac tones for a noble patina that ages beautifully over time. If you prefer vegetable-tanned leather, calf develops hazelnut-mahogany hues after 2-3 years. For intensive use or humid climates, rubber or canvas NATO straps provide sweat resistance without compromise. The choice depends on daily wear: formal elegance requires black alligator or dark calf; everyday versatility prefers canvas or rubber.

Strap replacement requires a specific tool: a spring bar removal tool. Position the watch with the pins horizontal, insert the tool under the pin whilst maintaining steady pressure until the pin retracts slightly, then remove the old strap. To install the new 18mm strap, align the holes with the pins and push gently until you hear the click confirming closure. If you are uncertain about the procedure, consult a watchmaker or craftsman: a misaligned pin or a forced strap will permanently damage the case lugs.

Yes, any strap with an 18mm lug width is compatible. High-quality aftermarket straps—in alligator, calf, cordovan or rubber—fit perfectly onto the original lugs. Important: verify that the supplier specifies "Longines Conquest Classic compatible" and that the width is genuinely 18mm. Generic low-quality straps may damage the case pins. For maximum aesthetic coherence, choose strap thickness consistent with case thickness (8.48mm): overly thick straps visually overburden the watch.

A high-quality leather strap (alligator, calf, cordovan) typically lasts 3-5 years with moderate daily use, depending on sun exposure, humidity and maintenance. Natural leather patinas and darkens controllably, developing surface imperfections that are normal. After 3-4 years, the inner surface (under the wrist) may show signs of wear; at that point, restoration or replacement is advisable. Rubber or NATO straps resist for 5-7 years. Longevity increases if you rotate straps seasonally: by alternating leather, rubber and canvas, each specimen rests 8-9 months yearly, preserving elasticity longer.