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

The lug width of the Longines Conquest V.H.P. L3.717.2.76.9 is 20 millimetres. This width is the standard specification for the model and is proportioned to the 42-millimetre case diameter. To verify compatibility with a strap, measure the distance between the metal lugs on the case: it must be exactly 20 millimetres, no wider or narrower.

There is no single "best" choice; it depends on aesthetic preference and usage. For a classic, vintage look, natural alligator in medium-brown tone is ideal: its regular grain emphasises the historical character of the Conquest family. For contemporary styling, vegetable-tanned calf leather offers linear texture and minimalist appeal. For sporting robustness, black FKM rubber with steel deployante clasp. Shell cordovan suits those who appreciate patinas that develop over time.

The strap is changed by removing the two rivets that secure it to the case lugs. Use a small brass hammer and a punch: position the punch on the rivet head and strike gently, taking care not to scratch the stainless steel case. Once the rivets are removed, extract the old strap. The new strap is secured with replacement rivets: for 20mm lug width, order rivets of 1.8–2mm diameter. Alternatively, consult a qualified watchmaker.

Yes, all artisanal straps in 20-millimetre lug width are compatible with the Conquest V.H.P. L3.717.2.76.9, provided the strap is constructed to precision standards. It is essential to verify that the strap ends (the flanges that enter the case lugs) have an exact width of 20 millimetres: an error of ±0.5 millimetres causes friction and mounting difficulty. Quality artisanal straps, such as those in alligator, calf, and shell cordovan, maintain tight manufacturing tolerances.

Durability depends on material and usage. Natural alligator, vegetable-tanned, typically lasts 5–8 years in daily wear, developing a progressive golden patina. Vegetable-tanned calf is more delicate and tends to last 3–5 years before showing visible wear. Shell cordovan, though thicker, may last 6–10 years but ages visibly with controlled creasing. FKM rubber lasts 4–6 years before stiffening. All these materials are easily renewed by replacing the strap, a far more economical operation than the watch itself.