Longines · Conquest Heritage

Strap for Conquest Heritage 40 Stainless Steel / Green / Bracelet

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
ReferenceL1.650.4.02.6
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 L1.650.4.02.6

Selected for the 20 mm lug width · workshop selection

All 20 mm straps →

The Conquest Heritage L1.650.4.02.6, seen from the bench

The Longines Conquest Heritage is powered by the L888.5 caliber with chronometer certification, indicating hours, minutes and seconds. The watch features 20mm lugs and automatic operation. The movement guarantees chronometric precision according to COSC standards.

Frequently asked questions

What is the lug width of the Longines Conquest Heritage L1.650.4.02.6?

The lug width is 20mm. This measurement represents the distance between the two case lugs where the strap attaches. Measure by placing a ruler perpendicular from the inner side of the left lug to the inner side of the right lug. Do not use 19mm or 21mm straps, as they will compromise both aesthetics and security of wear.

Which strap material pairs best with the Conquest Heritage?

Fine-grained alligator in dark brown creates an elegant contrast with the dial and accentuates the watch's sporting nature. For a more dynamic material, vegetable-tanned calf that is hand-dyed develops natural patina over time. For humid environments, a rubber strap with racing texture aligns with the Conquest's military heritage. Natural cotton NATO offers tactile sobriety, ideal for frequent strap rotation.

How do you change the strap on the Longines Conquest Heritage L1.650.4.02.6?

Use a spring bar removal tool to gently release the spring bars securing the strap to the case lugs. Position the tool in the small groove of the pin, apply gentle inward pressure until detachment, then remove the strap. Repeat on the other side. Insert the new strap by aligning the holes with the lugs, then push the spring bars into position until they click. Avoid excessive bending of the pins during removal.

Are third-party 20mm straps compatible with this model?

Yes, all straps with a 20mm lug width are dimensionally compatible. Always verify correct measurement before purchase. On milanostraps.it you will find a selection of handcrafted straps in alligator, calf, shell cordovan and technical materials, customisable in length, thickness and stitching. The Casati Milano atelier also creates bespoke straps with personal consultation and direct WhatsApp updates.

What is the lifespan of a leather strap for the Conquest Heritage?

A quality leather strap, subject to ordinary wear (5-6 days weekly wear), maintains full functionality for 3-5 years. Vegetable-tanned leather, used for handcrafted straps, develops natural patina in the first 6-12 months, improving both aesthetics and softness. Alligator is more resistant to wear and retains its finish longer. By rotating between different straps and periodic cleaning, lifespan extends significantly. The 18-month warranty on Casati Milano straps covers manufacturing defects.

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