Longines · Conquest Heritage

Strap for Conquest Heritage Pink Gold Russia

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

Lug width20 mm
Case diameter35 mm
ReferenceL1.611.6.21.4 (aka: L16116214)
FamilyConquest Heritage
MovementLongines caliber L633.5 Hours, Minutes, Seconds | Date
CasePink Gold

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 L1.611.6.21.4 (aka: L16116214)

Selected for the 20 mm lug width · workshop selection

All 20 mm straps →

The Conquest Heritage L1.611.6.21.4 (aka: L16116214), seen from the bench

The Longines Conquest Heritage L1.611.6.21.4 is a 35mm pink gold sports watch inspired by the iconic 1950s Conquest line. It features the Longines L633.5 automatic movement with manual winding and date function, visible through a transparent caseback. The 20mm lug width is a classic dimension proportionate to the case size, enabling compatibility with a wide range of straps. This Heritage model preserves the original design codes of Swiss sports watchmaking from its era.

Frequently asked questions

What is the lug width of the Longines Conquest Heritage L1.611.6.21.4?

The lug width of the Longines Conquest Heritage L1.611.6.21.4 is 20mm. This measurement determines strap compatibility: it represents the internal distance between the two lateral case lugs where the strap is inserted. Always verify this measurement before purchasing an aftermarket strap.

Which strap is most suitable for the Longines Conquest Heritage in pink gold?

For the Longines Conquest Heritage L1.611.6.21.4 in pink gold, we recommend alligator in cognac tone, vegetable-tanned calf leather in medium brown, or shell cordovan in burgundy colour. These materials enhance the warmth of the metal, creating elegant aesthetic continuity. For sports use, a rubber or NATO fabric strap represents the most versatile and practical alternative.

How do I change the strap on my Longines Conquest Heritage L1.611.6.21.4?

Strap replacement requires specific tools: a bayonet spring removal tool or a small precision screwdriver. Release the tension of the lug spring by gently inserting the tool into the lateral hole of the lug, pushing inward until the spring retracts. Extract the spring completely, then remove the old strap. Reverse the procedure for the new strap, ensuring the spring is fully inserted and seated correctly.

Can I use an aftermarket compatible strap on my Longines Conquest Heritage L1.611.6.21.4?

Yes, any strap with a 20mm lug width is compatible with the Longines Conquest Heritage L1.611.6.21.4. Artisanal milanostraps.it straps are customisable in leather, material, colour and finishes, allowing you to adapt the watch to your personal style. Always verify exact measurements before purchase to guarantee perfect fit.

How long does a leather strap last on a Longines Conquest Heritage?

A quality leather strap (alligator, calf, shell cordovan) typically lasts 3-5 years with daily use, depending on frequency of wear, climatic conditions and maintenance. Vegetable tanning and shell cordovan develop natural patina with age, improving aesthetically over time. With occasional preventive treatments (specific balms), durability can be significantly extended. A rubber or NATO textile strap offers greater resistance to wear in harsh environments.

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