Strap for Conquest Heritage 40 Stainless Steel / Black / Bracelet

The Longines Conquest Heritage L1.650.4.52.6 features a lug width of 20mm. This measurement is essential for selecting a compatible strap: the strap must fit snugly between the lugs without play or excessive tension. Always verify this dimension before purchase, as an incorrect measurement would compromise both comfort and the overall aesthetic presentation of the timepiece.

For the Longines Conquest Heritage L1.650.4.52.6, straps in alligator, vegetable-tanned calf, shell cordovan, or nylon NATO are recommended. Alligator offers sophistication and lasting patina; vegetable-tanned calf ensures ethical construction and deepening character; shell cordovan provides extraordinary tactile luxury; NATO represents sporty practicality. Your choice depends on intended context of use and personal aesthetic preference.

The strap is changed using specialised tools: a spring bar removal tool and a protected work surface. Position the watch with the case facing downward, locate the pins connecting the lugs to the strap, gently push them outward using the removal tool. After removing the strap, align the new strap's lugs with the holes and carefully reinsert the pins. If inexperienced, it is advisable to consult a professional watchmaker to avoid case damage.

Yes, an aftermarket strap is compatible provided it is crafted with a 20mm lug width. Many specialised artisans, including Casati Milano, create custom straps compatible with this reference, offering personalisation in leather, colour, and finishing. It is essential to verify that the strap's internal lugs match the originals precisely to ensure flawless mounting and total compatibility.

Leather strap durability depends on leather type, frequency of use, and environmental conditions. An alligator strap with vegetable tanning can last 3–5 years with daily wear; shell cordovan can exceed 5 years; standard calf leather 2–3 years. With proper maintenance—protection from excessive moisture, gentle cleaning, and rotation with other straps—longevity extends considerably. Casati Milano guarantees 18 months on custom-made straps.