Strap for Conquest 41 Automatic

The Longines Conquest L3.677.4.76.6 features 21mm lugs. This intermediate size requires a specific strap to avoid lateral play. Measure with a digital caliper between the inner lug pins. It is not compatible with 20mm or 22mm straps.

For this model, natural alligator (vegetable-tanned for aged patina), vitello in deep-dyed leather, or shell cordovan are recommended. Alligator delivers formal elegance with fine grain, vitello offers softness and wrist fit, and shell cordovan ensures moisture resistance. Choice depends on intended use: formal, daily wear, or semi-sport.

The Conquest L3.677.4.76.6 uses standard spring bar lugs. With a dedicated tool, gently lift the spring bar on one side, remove the old strap, align the new strap with the pin, and reinsert until you hear a click. A straightforward operation, doable at home with care.

Yes, provided the lug width is exactly 21mm. Many standard 20mm or 22mm straps will not fit without compromise. On milanostraps.it you'll find artisanal 21mm straps fully customisable. Casati Milano crafts made-to-measure straps with leather selection and custom details.

A quality leather strap (vegetable-tanned alligator, vitello, shell cordovan) lasts 3–5 years with moderate daily wear, up to 7–10 years with proper maintenance (periodic cleaning, rapid drying after sweat or rain, rotation with other straps). Wear increases if exposed to prolonged direct sunlight or persistent humid climates.