Longines · Conquest Classic

Strap for Conquest Classic Automatic 40 Stainless Steel / Silver

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
ReferenceL2.785.4.76.6 (aka: L27854766)
FamilyConquest Classic
MovementLongines caliber L619.2 hours, minutes, seconds | date
Year2015 - 2020
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 Classic L2.785.4.76.6 (aka: L27854766)

Selected for the 20 mm lug width · workshop selection

All 20 mm straps →

The Conquest Classic L2.785.4.76.6 (aka: L27854766), seen from the bench

The Conquest Classic represents Longines' sporty-elegant line with a contemporary aesthetic. It features the L619.2 caliber with hours, minutes, seconds and date indications. The L2.785.4.76.6 reference maintains the classic proportions of the model with a versatile design for everyday use.

Frequently asked questions

What is the lug width of the Longines Conquest Classic L2.785.4.76.6?

The lug width of the Longines Conquest Classic L2.785.4.76.6 is precisely 20 millimetres. This is the distance between the attachment pins measured perpendicularly. To verify this measurement, use a digital calliper positioned between the inner edges of both pins. This dimension is critical to ensure that a replacement strap sits flush without excessive lateral play, which would compromise wearing comfort and aesthetic alignment.

Which strap is recommended for the Longines Conquest Classic L2.785.4.76.6?

Recommended options for the Conquest Classic L2.785.4.76.6 include: crocodile or alligator in chocolate brown or burgundy for understated elegance; vegetable-tanned calf for natural patina development over time; shell cordovan for superior durability and pronounced character; black alligator for formal occasions; and sports rubber for recreational marine use. Selection depends on primary use case: formal business wear, versatile daily wear, or recreational sports applications.

How do I change the strap on the Longines Conquest Classic L2.785.4.76.6?

To change the strap, you will require: a spring bar tool, a small fine file or sharp needle, and a stable work surface. Position the watch with the lower lug facing you, insert the tool into the pin access hole, release the internal spring, and extract the pin completely. Repeat for the upper lug. Insert the pins into the new strap in the opposite direction, ensuring the spring seats properly in the fixing holes. Professional assistance from Casati Milano's atelier eliminates risk of case damage during this operation.

Are aftermarket straps compatible with the Longines Conquest Classic L2.785.4.76.6?

Yes, any strap with a 20-millimetre lug width is compatible with the Longines Conquest Classic L2.785.4.76.6, provided the overall length suits your wrist circumference (typically 160-210mm from pin to buckle). Aftermarket straps offer superior stylistic versatility and material quality compared to original equipment. milanostraps.it curates a selection of 20mm-compatible straps customisable in length, stitching colour, and monogram initials.

What is the typical lifespan of a leather strap on the Longines Conquest Classic L2.785.4.76.6?

A high-quality leather strap, used daily under normal conditions, typically lasts 3–5 years before replacement becomes necessary. Shell cordovan, owing to its structural durability, may serve 7–8 years under intensive use. Vegetable-tanned calf, which develops patina, can be maintained longer through periodic cleaning and conditioning with natural balms. Rubber sports straps last 8–10 years with minimal maintenance. Environmental factors—humidity, temperature fluctuations, and frequency of use—significantly influence lifespan.

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