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Longines · Conquest Classic

Strap for Conquest Classic 42 GMT Stainless Steel / Silver

Takes 21 mm straps. Verified lug width, the straps that fit this model, and answers to the most common questions.

Lug width

21mm
21 mm strapsAll Longines
Lug width21 mm
Case diameter42 mm
ReferenceL2.799.4.76.3 (aka: L27994763)
FamilyConquest Classic
MovementLongines caliber L704.2 Hours, Minutes, Seconds, Additional 24 Hour Hand (adjustable) | Date
CaseStainless Steel

Spring bar

Swiss Standard universal spring bars

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

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Straps for the Conquest Classic L2.799.4.76.3 (aka: L27994763)

Selected for the 21 mm lug width · workshop selection

All 21 mm straps →

The Conquest Classic L2.799.4.76.3 (aka: L27994763), seen from the bench

The Longines Conquest Classic L2.799.4.76.3 represents the brand's sporting heritage dating back to the 1950s. It features a 42 mm stainless steel 316L case with a clean, proportioned design and sapphire crystal. The automatic calibre L704.2 with 27 rubies runs at 3 Hz, offering 30 bar water resistance. The dial includes hours, minutes, seconds, an independently adjustable 24-hour hand, and a date window at 3 o'clock. The 21 mm strap width is a distinctive specification requiring specific craftsmanship for strap assembly and sourcing.

Frequently asked questions

What is the exact lug width of the Longines Conquest Classic L2.799.4.76.3?

The lug width of the Longines Conquest Classic L2.799.4.76.3 is precisely 21 millimetres. This measurement must be taken internally, from one lug to the other, at the point where the strap inserts. An unusually generous lug width that demands specific aftermarket strap research.

Which strap pairs best with the Longines Conquest Classic L2.799.4.76.3?

The ideal strap depends on your intended use: an <a href="/pages/termine-glossario/alligatore">alligator</a> in deep brown or midnight blue amplifies constructive dignity and evening versatility; brushed calf in cognac or warm grey develops a patina that improves with time; a woven NATO maintains the original sporting character with practical durability. All pairings must respect the 21mm lug width specification.

How do I correctly change the strap on this Longines?

Strap changing requires a specialised tool (spring bar removal tool) or professional intervention. Insert the tool tip into the small holes at the base of the lug, gently pushing to release the spring bar. Once the bar is free, the old strap slides away easily. Ensure your replacement strap is fitted with 21mm lugs and that the spring bar diameter matches the original specification.

Which aftermarket straps are compatible with the Longines Conquest Classic L2.799.4.76.3?

Any strap equipped with 21mm lugs is compatible with this model. Leather options (alligator, calf, <a href="/pages/termine-glossario/shell-cordovan">shell cordovan</a>), woven textile (NATO, canvas), FKM rubber and metal bracelets (with <a href="/pages/termine-glossario/deployante">deployant clasp</a>) represent the most common solutions. On milanostraps.it you will find a curated selection of 21mm straps ready for immediate pairing.

How long does a leather strap last on the Longines Conquest Classic L2.799.4.76.3?

Leather strap longevity depends on build quality, tanning method and daily usage patterns. A <a href="/pages/termine-glossario/concia-vegetale">vegetable-tanned</a> strap of artisanal quality, with gentle maintenance (light cleaning, moderate water exposure), typically lasts 18–36 months. Leather develops a natural patina and micro-cracking that accelerates wear. Alligator or shell cordovan straps, owing to their structural density, often endure longer. An 18-month warranty is standard for high-end artisanal straps.

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