Strap for Conquest V.H.P. Chronograph 42 Stainless Steel / Black / Rubber

The Longines Conquest V.H.P. L3.717.4.56.9 features a 20-millimetre lug width. This specification is unique to this model and was chosen to maintain balanced proportions relative to the 42mm case diameter. When sourcing an aftermarket strap, ensure it is compatible with this exact lug width.

Selection depends on intended use and occasion. For formal elegance, black or deep brown alligator is ideal. For everyday versatility, vegetable-tanned calf leather is highly recommended, developing natural patina over time. For sports or summer activities, reinforced nylon NATO or rubber maintain functionality without compromise. Always utilise a stainless steel deployant clasp for maximum security.

The Longines L3.717.4.56.9 uses standard spring bars to secure the strap to the case. Using a spring bar remover tool, press the spring bar towards the centre of the lug until the strap end is released, then remove the old strap. Insert the new strap by aligning the hole with the spring bar and slide the end until you feel the click. The operation takes less than one minute per side.

Yes, absolutely. Any high-quality 20mm strap is compatible with the standard Conquest V.H.P. lug attachment. Reputable aftermarket options in leather, NATO, or rubber maintain the same technical specifications as original Longines straps. Simply verify that the strap features a stainless steel deployant clasp for maximum security and comfort.

A high-quality leather strap (alligator, calf, shell cordovan) typically lasts between 3 to 5 years with daily wear, depending on maintenance and tanning method. Vegetable-tanned leather tends to last longer than chrome-tanned leather, as it develops natural patina without drying. With periodic care (gentle cleaning, avoiding prolonged salt water exposure), lifespan extends considerably. Rubber lasts 2-3 years before losing elasticity, whilst reinforced nylon NATO surpasses 5 years without issue.