Longines · Conquest

Strap for Conquest Chronograph Automatic 41mm Silver

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

Lug width21 mm
Case diameter41 mm
ReferenceL2.743.4.76.6 (aka: L27434766)
FamilyConquest
MovementLongines caliber L688.2 Hours, Minutes, Small Seconds | Date | Chronograph, Column wheel
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 L2.743.4.76.6 (aka: L27434766)

Selected for the 21 mm lug width · workshop selection

All 21 mm straps →

The Conquest L2.743.4.76.6 (aka: L27434766), seen from the bench

The Longines Conquest L2.743.4.76.6 is a 41mm stainless steel chronograph with 21mm lug width, continuing a sportive line founded in 1954. Powered by the Longines caliber L688.2 quartz movement with column wheel chronograph, it features a dark blue dial, applied indices, and sapphire crystal. Water-resistant to 100 metres, it maintains the functional design philosophy of the Conquest family without ornamental elements.

Frequently asked questions

What is the lug width of the Longines Conquest L2.743.4.76.6?

The lug width is 21mm. This measurement represents the space available between the two lugs of the case for the strap. It is important not to confuse this dimension with the total case diameter, which is 41mm. To verify the correct measurement, use a digital calliper positioned internally between the two lugs.

Which strap is most suitable for the Longines Conquest L2.743.4.76.6?

The choice depends on intended use and aesthetic preferences. For formal occasions, we recommend high-quality alligator with fine grain or burgundy shell cordovan. For daily wear, waxed calf with vegetable tanning develops a natural patina over time. For sports or humid environments, nylon NATO or vulcanised rubber offer superior resistance. The blue dial of the Conquest pairs naturally with medium brown, burgundy, or black straps.

How do you change the strap on a Longines Conquest?

The Longines Conquest L2.743.4.76.6 uses standard 21mm spring bars. To remove the strap, use a dedicated tool or a thin flathead screwdriver to gently compress the spring from inside the lug, sliding the bar out of the hole. Repeat on the other lug. Installation of the new strap is the reverse process: align the strap holes with the attachments, insert the spring, and verify it is fully engaged. Avoid forcing to prevent damage to the lugs.

Can I use an aftermarket strap compatible with the Longines Conquest L2.743.4.76.6?

Yes, any strap with a 21mm lug width is compatible with the Conquest L2.743.4.76.6. Artisanal aftermarket straps, such as those available on milanostraps.it, often offer superior materials (alligator, shell cordovan, vegetable-tanned calf) compared to original straps. Ensure that the overall width of the strap is proportionate to the 41mm case—a width of 20-21mm is the standard for this model.

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

Durability varies based on material, frequency of use, and environmental conditions. A quality waxed calf or alligator strap, used daily, has an estimated lifespan of 3-5 years before requiring replacement. Shell cordovan, due to its density, may last 5-7 years or longer. Rubber or NATO straps typically have a longer lifespan, up to 7-10 years. Exposure to extreme humidity, intense heat, and mechanical stress reduces durability. Regular maintenance (cleaning, conditioning) significantly extends strap life.

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