Best Straps for Longines Conquest 38mm

Best strap for Longines Conquest 38mm on wrist

At a Glance

#	Best For	Strap	Material	Thickness
1	Overall / First Purchase	Yellow CTS Rubber Strap	FKM Rubber	N/A
2	Dressy / Formal	Colibri Rubberised Leather (Togo) Signature Strap	Rubberised Leather	4.5-2.2mm
3	Everyday / Casual	Nubuck Denim Ostrich Leg Signature Strap	Ostrich	4.5-2.2mm
4	Minimalist / Refined	Purple Sailcloth Signature Strap	FKM Rubber (Sailcloth)	4.5mm
5	Casual / Relaxed	Baby Blue Alcantara Signature Strap	Alcantara	4.5-2.2mm
6	Active / Sporty	Baby Blue Chevre Slim Strap	Goatskin (Chèvre)	N/A
7	Comfort / Wildcard	Glossy Lagoon Blue Crocodile Signature Strap	Crocodile	4.5-2.2mm

The Longines Conquest 38mm (ref. L3.759) is one of those watches that makes you stop and look — and then look again. Its black lacquered polished dial with luminous markers, Conquest 41mm quartz with screw-in crown and sapphire crystal. At 19mm lug width, it is an incredibly versatile canvas for strap changes.

At 41mm across and 11.8mm thick, the Conquest 38mm wears like a watch that was designed to be lived with — not just admired behind glass. The right strap pairing amplifies what this watch already does well.

Here are my 7 picks — and why each one works.

Quick Specs

Case diameter	41mm
Lug width	19mm
Lug-to-lug	48mm
Case thickness	11.8mm
Water resistance	300m
Crystal	Sapphire with AR coating
Case material	Stainless steel
Movement	Caliber L888 (quartz with high accuracy)

The 19mm lug width means your options are curated but well-covered. Already know what you're looking for? Browse all Longines Conquest 38mm-compatible straps on the Strap Finder →

1. Best Overall — Yellow CTS Rubber Strap

Every watch needs a go-to strap, and for the Longines Conquest 38mm, this is it.

The Yellow CTS Rubber Strap is made from FKM rubber — a high-performance elastomer that resists chemicals, heat, and ageing. Unlike silicone, it does not attract dust or lint. Cut-to-size construction means you trim it to your exact wrist measurement — no leftover tail, no keepers.

Paired with the Longines Conquest 38mm's black dial, this strap adds a layer of personality that the factory option does not offer. The 11.8mm case thickness means a padded strap like this one feels proportional and substantial.

It's the kind of pairing that makes you wonder why you didn't try it sooner.

Other colours worth considering:

2. Best Dressy — Colibri Rubberised Leather (Togo) Signature Strap

There's dressy, and then there's refined. This strap lands squarely in refined territory.

The Colibri Rubberised Leather (Togo) Signature Strap uses rubberised leather — a material that blends the look and feel of leather with the water resistance and durability of rubber. The smooth finish is clean and modern, and the pastel colour options add a playful element to otherwise serious watches. The Signature profile tapers from 4.5mm at the lugs to 2.2mm at the buckle — substantial enough to match a dress watch without adding bulk.

The Longines Conquest 38mm's 41mm case is ideally proportioned for this strap. Whether you are wearing it casually or dressing it up, the combination feels intentional. It is the kind of pairing where both the watch and strap look better together than apart.

Simple, effective, and genuinely enjoyable to wear.

Alternatives in the same family:

3. Best Everyday — Nubuck Denim Ostrich Leg Signature Strap

For daily wear, comfort and versatility matter more than anything else.

The Nubuck Denim Ostrich Leg Signature Strap is crafted from nubuck leather — soft, velvety to the touch, and comfortable from the first wear. No break-in period needed. The suede-like texture adds a casual warmth that takes the edge off a formal watch without losing sophistication. The Signature profile tapers from 4.5mm at the lugs to 2.2mm at the buckle — substantial enough to match a dress watch without adding bulk.

The kind of strap that earns a permanent spot in your rotation.

If this style appeals but you want a different tone:

4. Best Minimalist — Purple Sailcloth Signature Strap

Sometimes less is more. This strap proves it.

The Purple Sailcloth Signature Strap features a sailcloth weave pattern moulded into FKM rubber — so you get the textured, technical look of fabric with the water resistance and durability of rubber. No fraying, no water absorption, no break-in period. The Signature profile tapers from 4.5mm at the lugs to 2.2mm at the buckle — substantial enough to match a dress watch without adding bulk.

On the Longines Conquest 38mm, this strap balances the tool-watch DNA with a touch of refinement. The 41mm case at 11.8mm thick pairs naturally with the padded construction without creating any imbalance on the wrist.

A combination that's greater than the sum of its parts.

Worth a look in other colourways:

5. Best Casual — Baby Blue Alcantara Signature Strap

Not every strap needs to make a statement. Sometimes relaxed is the right move.

The Baby Blue Alcantara Signature Strap is crafted from Alcantara — the same Italian material used in luxury car interiors and high-end sportswear. It has a suede-like softness that is immediately comfortable, with a luxurious hand feel that belies its toughness. The Signature profile tapers from 4.5mm at the lugs to 2.2mm at the buckle — substantial enough to match a dress watch without adding bulk.

What makes this pairing work on the Longines Conquest 38mm is the contrast — the sporty character of the watch is complemented by the practical construction. With a 41mm case, the proportions stay balanced.

Worth a look in other colourways:

6. Best Sporty — Baby Blue Chevre Slim Strap

When you want your Longines Conquest 38mm to feel more relaxed and sporty, this is the pick.

The Baby Blue Chevre Slim Strap is made from chevre (goatskin) leather, sourced from the Alran tannery. The natural pebbled grain is finer than Epsom and slightly shiny — it looks luxurious without trying too hard. Chevre is also impressively water and scratch resistant for a natural leather.

It's the kind of pairing that makes you wonder why you didn't try it sooner.

7. The Wildcard — Glossy Lagoon Blue Crocodile Signature Strap

Every rotation needs a curveball. This is mine.

The Glossy Lagoon Blue Crocodile Signature Strap is made from genuine crocodile leather with a distinctive scale pattern that no embossed leather can replicate. The texture adds visual depth and character that works equally well with a suit or a smart-casual outfit. The Signature profile tapers from 4.5mm at the lugs to 2.2mm at the buckle — substantial enough to match a dress watch without adding bulk.

Alternatives in the same family:

A Note on Buckle Colour

Delugs Spring Deployant Clasp

Quick but important: always match your buckle to your case. The Longines Conquest 38mm's Stainless steel case calls for a silver (brushed or polished) buckle. All Delugs leather straps ship with a pin buckle and can be upgraded to a Spring Deployant Clasp for extra security and convenience. All Delugs straps come with quick-release spring bars pre-installed, so swapping straps takes seconds.

How to Change the Strap on Your Longines Conquest 38mm

Swapping straps on the Longines Conquest 38mm is one of the easiest upgrades you can make — and with Delugs straps, you don't even need a tool.

If your Longines Conquest 38mm came on a bracelet, you'll first need to remove it. The easiest way to do this at home is with a Bracelet Removal Tool, which lets you compress the spring bars without risking scratches to the lugs or caseback. Once the bracelet is off, you can slide your new Delugs strap straight in.

All Delugs straps come with quick-release spring bars already pre-installed, so changing straps is completely tool-free. Here's how:

Prepare your workspace. Lay the watch face-down on a soft cloth or microfiber pad to protect the caseback from scratches.
Release the spring bar. Locate the small lever on the quick-release spring bar. Pull it back with your fingernail or fingertip to compress the bar.
Remove the strap. While holding the lever, angle the strap out from between the lugs. Repeat for the other side.
Insert the new strap. Slide one end of the spring bar into the lug hole. Pull the lever on the quick-release spring bar knob, guide the entire spring bar into the opposite lug hole, and then release the knob. You should hear a small click when the spring bar extends and seats into the lug hole.
Check the fit. Give the strap a gentle tug to make sure both spring bars are securely locked in. If there's any play, reseat the spring bar.

The entire process takes under a minute once you get the hang of it — no spring bar tool required. The Longines Conquest 38mm uses a standard 19mm lug width, and all Delugs straps in 19mm will fit perfectly.

Frequently Asked Questions

What is the lug width of the Longines L3.759?

The Longines L3.759 has a 19mm lug width. While 19mm is less common than 20mm, there is still a strong selection of quality straps available. All Delugs straps are available in 19mm.

What is the reference number for the Longines Conquest 38mm?

The reference number for the Longines Conquest 38mm is L3.759. You can find this on the caseback of your watch or on the original paperwork. Knowing your reference number helps ensure you get the right lug width when ordering a strap.

Can I use a dressy leather strap on a Longines sport watch?

Yes — and it's a surprisingly good combination. Putting the Conquest 38mm on a leather strap, especially something like an alligator or saffiano, dresses it up for occasions where a bracelet or rubber might feel too casual. The contrast between a sport watch and a refined strap can be striking.

Do Delugs straps come with spring bars?

Yes — every Delugs strap comes with quick-release spring bars pre-installed. This means you can change straps by hand in seconds, without needing any tools. The quick-release mechanism uses a small lever that you pull with your fingertip to compress the spring bar.

What is the best strap material for the Longines Conquest 38mm?

For the Conquest 38mm, rubber and sailcloth are excellent starting points — waterproof, durable, and purpose-built for active wear. If you want to dress it up, waxy or nubuck leather straps add character while remaining practical. Browse the Strap Finder to see all compatible options.

Does Longines use quick-release spring bars?

Most Longines watches use standard spring bars that require a tool to remove. All Delugs straps come with quick-release spring bars pre-installed, so once you make the switch, future changes are completely tool-free.

Where can I find straps compatible with the Longines L3.759?

The Longines Strap Finder shows every Delugs strap compatible with the L3.759, filtered by lug width and style. You can also use the general Strap Finder to browse by brand, collection, and material. If you need help choosing, our team is available 24/7 via live chat.

Finding Your Strap

The beauty of the Longines Conquest 38mm is that it rewards experimentation. Leather one day, rubber the next — each strap brings out a different side of the watch.

Use the Longines Conquest 38mm Strap Finder to see every compatible strap in one place, filtered to your exact reference. Or if you'd rather explore by feel, the general Longines Strap Finder lets you browse the full lineup and find your match.

Not sure which strap is right for your specific Conquest 38mm? Our team is available 24/7 via live chat — drop us a message and we'll help you find the perfect match for your watch, wrist size, and style.

About Delugs

Founded in 2018 and headquartered in Singapore, Delugs is dedicated to elevating the experience of watch ownership through the simple yet powerful act of strap changing. We believe that straps are integral to how a timepiece is worn, perceived, and enjoyed. Our mission is to make strap changing a lifestyle — an everyday act of self-expression and versatility.

Delugs is an independent brand with a global community of clients, with a strong online presence and growing physical retail footprint. Our direct-to-consumer focus keeps us closely connected with the watch enthusiast community — fostering conversations, hosting events, and helping shape a more inclusive and expressive culture around watch collecting. We also work closely with watch brands to craft straps that complement their timepieces, bridging the gap between brand and collector, form and function.

Our catalogue spans leather, rubber, and fabric straps, with options for every watch and every occasion. We are committed to craftsmanship and quality, product design and innovation, and outstanding customer service. We offer watch owners the freedom to change straps as easily as changing outfits, and the opportunity to engage more deeply with the watches they love.

Visit our flagship boutique at Raffles Hotel, Singapore →

— Marcus