Longines · Conquest Heritage

Strap for Conquest Heritage 38 Stainless Steel / Blue

Takes 19 mm straps. Verified lug width, the straps that fit this model, and answers to the most common questions.

Lug width19 mm
Case diameter38 mm
ReferenceL1.649.4.92.2
FamilyConquest Heritage
MovementLongines caliber L888.5 ND hours, minutes, seconds | chronometer
Year2025
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 L1.649.4.92.2

Selected for the 19 mm lug width

All 19 mm straps →

The Conquest Heritage L1.649.4.92.2, seen from the bench

The Longines Conquest Heritage L1.649.4.92.2 is a contemporary reinterpretation of the 1954 Conquest chronograph, originally an official instrument for military pilots and international timekeepers. The 38 mm stainless steel case features a clean dial with baton indices and houses the L888.5 ND automatic chronometer movement certified to -4/+6 seconds per day. The 19 mm lug width ensures optimal proportions and compatibility with quality aftermarket straps, while the moderate case height facilitates comfortable everyday wear.

Frequently asked questions

What is the lug width of the Longines Conquest Heritage L1.649.4.92.2?

The lug width of the Longines Conquest Heritage L1.649.4.92.2 is 19 millimetres. This measurement represents the distance between the inner edges of the case lugs and is essential when selecting a compatible aftermarket strap. Any strap for this model must measure exactly 19mm to ensure proper attachment and correct fit.

What is the best strap for the Longines Conquest Heritage L1.649.4.92.2?

The optimal strap depends on intended use and personal preference. For classic elegance, an alligator strap with vegetable tanning in cognac or dark brown tones ages beautifully over time. For versatile sport-formal styling, premium calf leather offers softness and develops patina gracefully. For a pure sports approach, an artisanal NATO strap in robust cotton or technical nylon ensures maximum functionality and quick changes. Vulcanised rubber is ideal for aquatic environments.

How do I change the strap on a Longines Conquest Heritage?

Strap replacement requires a dedicated spring bar tool. Position the watch on a stable surface, locate the two small metal pins beneath the lugs, insert the tool tip into the gap between lug and pin, and gently press to release the internal spring. Remove the old strap, verify pin integrity, and align the new strap before clicking it into position. If this procedure feels complex, consult a professional watchmaker.

Can I use aftermarket straps on a Longines Conquest Heritage L1.649.4.92.2?

Yes, quality artisanal aftermarket straps are fully compatible with the Longines Conquest Heritage provided they respect the 19-millimetre lug width specification. Specialised manufacturers offer straps in alligator, calf, rubber and technical textiles that fit perfectly. Always select producers who verify compatibility and guarantee construction quality, such as Milano Straps, where you can personalise length, initials, and stitching thread colour.

How long does a leather strap last on a watch like the Conquest Heritage?

Strap longevity depends on material, construction quality, and usage intensity. A quality artisanal alligator strap with vegetable tanning can last 5–10 years with daily wear, developing noble patina and softness over time. Premium calf leather has similar durability but may show more visible wear on the flanks. Naturally oiled straps develop prominent creases over time but maintain a captivating aesthetic. To extend lifespan, avoid prolonged water exposure and periodically apply leather conditioning products designed for watch 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