Longines · Conquest Heritage

Strap for Conquest Heritage 40 Year of the Snake

Takes 20 mm straps. Verified lug width, the straps that fit this model, and answers to the most common questions.

Lug width20 mm
Case diameter40 mm
ReferenceL1.651.4.09.2
FamilyConquest Heritage
MovementLongines caliber L888.5 ND hours, minutes, seconds | chronometer
Year2024
CaseStainless Steel

Spring bar

Swiss Standard universal spring bars

The right category for this model · 316L steel, all lug widths 13–26 mm

Straps for the Conquest Heritage L1.651.4.09.2

Selected for the 20 mm lug width · workshop selection

All 20 mm straps →

The Conquest Heritage L1.651.4.09.2, seen from the bench

The Longines Conquest Heritage L1.651.4.09.2 is the contemporary evolution of one of Swiss watchmaking's most iconic sports lines, originally launched in 1954. This Heritage reinterpretation recovers the original aesthetic—clean dial, applied indices, unidirectional steel bezel—filtered through contemporary sobriety. The 41.3 mm stainless steel case houses the Longines L888.5 ND quartz chronometer movement with COSC certification. Water-resistant to 300 meters, it features a sapphire crystal protecting the deep blue dial. The 20 mm lug width is standard for 40–42 mm watches of this generation, enabling broad strap combinations.

Frequently asked questions

What is the lug width of the Longines Conquest Heritage L1.651.4.09.2?

The lug width is 20 mm, measured from the inner shoulder of the metal lug bar on both sides. This size is standard for 40-42 mm sports watches and is fully compatible with the extensive range of straps available on Milano Straps.

Which strap is best suited for the Longines Conquest Heritage L1.651.4.09.2?

It depends on the occasion: for formal contexts, vegetable-tanned alligator or shell cordovan provide elegance without compromise. For sports use, calfskin or NATO fabric straps maintain fidelity to the chronograph heritage. The stainless steel case pairs well with earthy-toned leather: medium brown, burgundy, deep black.

How do I change the strap on my Longines Conquest Heritage L1.651.4.09.2?

Remove the current strap by gently unscrewing the spring bars from the lugs using a flat tool (or dedicated strap tool) to avoid scratches. Insert the new strap's bars into the same holes: the 20 mm size guarantees immediate compatibility. If your new strap has stainless steel passants, align them with the case before securing.

Can I fit an aftermarket strap on the Longines Conquest Heritage L1.651.4.09.2?

Yes, provided the lug width is 20 mm. Milano Straps' artisanal straps have been tested on this model, guaranteeing precise fit, absence of aesthetic overhang, and durability through premium materials (alligator, cordovan, vegetable-tanned calfskin).

How long does a leather strap last on the Longines Conquest Heritage L1.651.4.09.2?

A quality leather strap with vegetable tanning lasts approximately 3-5 years with daily wear, developing a beautiful patina over time. Shell cordovan easily reaches 7+ years. Longevity depends on exposure to water (avoid frequent immersion), sweat, and frequency of wear. Casati Milano offers 18 months warranty and maintenance services.

The next step

The right strap isn't chosen. It is built, together.

From the atelier appointment to delivery, every step is made for those who know that things done well take time. Rare leathers, one piece at a time, eighteen months of warranty.

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Casati Milano · Via XX Settembre 15, Milan · by appointment only