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Longines · Conquest

Strap for Longines Conquest L3.658.4.56.2

The Conquest Automatic 41mm Black Rubber takes 21 mm straps. Verified lug width, the straps that fit this model, and answers to the most common questions.

Lug width

21mm
21 mm strapsAll Longines
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Lug width21 mm
Case diameter41 mm
ReferenceL3.658.4.56.2 (aka: L36584562)
FamilyConquest
MovementLongines caliber L633.5 Hours, Minutes, Seconds | Date
CaseStainless Steel

Spring bar

Swiss Standard universal spring bars

The right category for this model · 316L steel, all lug widths 13–26 mm

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What I'm asked about the Longines Conquest L3.658.4.56.2

What strap size does the Longines Conquest L3.658.4.56.2 take?

The Longines Conquest L3.658.4.56.2 needs 21 mm between the lugs, usually 18 mm at the buckle. It's the size I've been fitting on it for years.

Can the strap on the Longines Conquest L3.658.4.56.2 be changed?

Yes. It has spring bars between the lugs: with the right tool the strap comes off in a minute. If you'd rather not risk a scratch, I do it in the workshop.

Can I put a leather strap on the Longines Conquest L3.658.4.56.2?

Yes, in 21 mm leather. On a 41 mm case a calf strap works every day; if you want something more, alligator.

Which strap do you recommend for the Longines Conquest L3.658.4.56.2?

A 21 mm calf strap, for every day. You'll find it ready in the 21 mm collection. If you'd rather have something built on your wrist, the Casati atelier.

Straps for the Conquest L3.658.4.56.2

Selected for the 21 mm lug width · workshop selection

All 21 mm straps →

The Conquest L3.658.4.56.2, seen from the bench

The Conquest features the Longines L633.5 caliber with hour, minute, second and date functions. The watch has 21mm lugs and the reference L3.658.4.56.2. The movement provides time indication with integrated date.

Frequently asked questions

What is the best strap material for the Longines Conquest L3.658.4.56.2?

The Conquest responds magnificently to noble materials such as satin-finished alligator in black or cognac brown, which emphasise the technical-sporting character. For a compelling ageing process, vegetable-tanned calf with developed patina is excellent. For versatility, bordeaux shell cordovan combines elegance and durability, whilst vulcanised rubber honours the collection's sporting heritage.

Are aftermarket 21mm straps compatible with the Longines Conquest L3.658.4.56.2?

Yes, any 21mm strap is compatible mechanically with the Longines Conquest L3.658.4.56.2, provided that the lug width matches exactly and the spring bar seats are properly aligned. We recommend always verifying the measurement before ordering. On milanostraps.it you will find a curated selection of 21mm straps specifically dimensioned.

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

A genuine leather strap on a Longines Conquest, with moderate daily use, maintains structural functionality between 2-4 years. Duration increases with preventive care: rapid drying after perspiration, avoidance of prolonged wetting and occasional treatments with vegetable balms. Premium leathers such as shell cordovan or vegetable-tanned calf develop fascinating patina precisely through time, transforming wear into character.

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.

Request an appointment →

Casati Milano · Via XX Settembre 15, Milan · by appointment only

The atelier's website: casatimilano.com