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

The lug width of the Longines Conquest V.H.P. L3.717.2.56.9 is precisely 20 millimetres. This measurement determines strap compatibility: every strap purchased must have a 20mm width at the lug attachment seat. An error in measurement would render the strap unusable or compromise the positioning of the deployant buckle.

For the Conquest V.H.P. L3.717.2.56.9, vegetable-tanned alligator straps are recommended for a formal-sportive approach, lined calf leather for everyday versatility, and shell cordovan for durability and patina development over time. FKM rubber is ideal for aquatic environments or technical activities. The choice depends on intended use: business contexts call for alligator or calf, while sports and adventure favour NATO or rubber.

The strap is changed by removing the lugs from the case using a dedicated spring bar remover tool or a small flat lever. Gently push the internal springs towards the inside of the case to free the lug. Insert the new 20mm strap by aligning the attachment seat, then lower the springs until they reach their natural position. Always move slowly and deliberately to avoid damage to the case.

Yes. Longines uses standard 20mm lugs, which are compatible with aftermarket straps of the same width produced by specialist ateliers. On MilanoStraps you will find a selection of 20mm straps in vegetable-tanned leather, alligator, cordovan, and rubber, customisable in colour, initials, and stitching thread. The Casati Milano atelier also offers bespoke strap creation with personalised consultation.

A quality leather strap (calf, alligator, cordovan), with moderate use and regular maintenance, has a lifespan of 3–5 years. Shell cordovan tends to last longer (5–7 years) due to its superior density. Vegetable-tanned leather develops patina as it ages, increasing aesthetic character. FKM rubber resists degradation for 5–7 years if not exposed to prolonged UV radiation. The frequency of replacement depends on exposure to moisture, heat, and mechanical wear.