Strap for Conquest Heritage Chronograph

The lug width of the Longines Conquest Heritage L1.641.4.75.4 is 20mm. This is the distance between the lugs (the metal eyelets on each side of the case) where the strap attaches. To verify strap compatibility, measure with a calliper the distance between the lugs: it must be exactly 20mm. Do not confuse lug width with strap thickness, which is a separate parameter.

The best strap depends on your intended use. For formal elegance: alligator or shell cordovan in brown or burgundy tones. For versatility and visible ageing: vegetable-tanned leather in cognac or bordeaux. For durability and casual wear: FKM rubber at high density or NATO in 1000D Cordura. The ideal choice reflects the sport-elegant balance of the watch, avoiding excessive decorative elements.

To change the strap, position the watch on a soft surface with the case facing downward. Locate the two spring bars (or pins) that connect the strap to the side lugs. Using a spring bar tool, gently press inward to release the internal spring mechanism of the bar, then extract the pin. Repeat on the opposite side. Insert the bars into the new strap in reverse order. Ensure the bars are fully seated within the lugs.

Yes, any strap with a 20mm lug width is compatible with the Longines Conquest Heritage L1.641.4.75.4. Online retailers specialising in craft straps (such as milanostraps.it) offer various leather types, colours and finishes. Always verify that the strap is specified as 20mm and that thickness is appropriate (typically 1.4–1.6mm for elegant leathers, 1.8–2.2mm for rubber).

A quality leather strap (alligator, shell cordovan, calf with vegetable tanning) typically lasts 3–5 years with moderate daily use. Durability depends on: frequency of use, climatic conditions, maintenance (regular cleaning, protection from excessive moisture). Artisanal straps of high quality age elegantly and permit replacement of the inner lining without damaging the strap structure. Storing the watch in a dry location significantly extends strap life.