Laco Kempten 39 Type B · Ref. THE THE LACO KEMPTEN 39 TYPE B 2025 · 17mm lug
At a Glance
| # | Best For | Strap | Material | Thickness |
|---|---|---|---|---|
| 1 | Overall / First Purchase | Light Grey Chevre Slim Strap | Chèvre | 2.2mm |
| 2 | Dressy / Formal | Matte Black Alligator Signature Strap | Alligator | 4.5–2.2mm |
| 3 | Everyday / Casual | Natural Pueblo Slim Strap | Pueblo Calfskin | 2.2mm |
| 4 | Minimalist / Refined | Green Shell Cordovan Slim Strap | Shell Cordovan | 2.2mm |
| 5 | Casual / Relaxed | Whiskey Waxy Slim Strap | Waxy Leather | 2.2mm |
| 6 | Active / Sporty | Mocha Babele Slim Strap | Babele Calfskin | 2.2mm |
| 7 | Comfort / Wildcard | Black Rubberised Leather (Togo) Signature Strap | Togo Leather (Rubberised) | 4.5–2.2mm |
There is a reason the Laco Kempten 39 Type B (ref. THE THE LACO KEMPTEN 39 TYPE B 2025) keeps showing up in conversations about the best watches in its class. The finishing and attention to detail speak for themselves. It wears its 17mm lug width elegantly, and that is where aftermarket straps come in.
The case with its profile gives you just enough wrist presence to anchor different strap materials without the watch disappearing. Here are my 7 picks — and why each one works.
Quick Specs
| Case diameter | |
| Lug width | 17mm |
| Lug-to-lug | |
| Case thickness | |
| Water resistance | |
| Crystal | |
| Case material | |
| Movement |
The 17mm lug width means your options are curated but well-covered. Already know what you're looking for? Browse all Laco Kempten 39 Type B-compatible straps on the Strap Finder →
1. Best Overall — Light Grey Chevre Slim Strap
If you're buying your first aftermarket strap for the Laco Kempten 39 Type B, this is where I'd start.
The Light Grey 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. At 2.2mm thick, it balances presence and wearability nicely.
On the Laco Kempten 39 Type B, this strap preserves the watch's go-anywhere character. The case at thick pairs naturally with the padded construction without creating any imbalance on the wrist.
Once you see it on the wrist, it just clicks.
The range goes deeper if you want to explore:
2. Best Dressy — Matte Black Alligator Signature Strap
The Laco Kempten 39 Type B cleans up remarkably well — and this strap is the reason.
The Matte Black Alligator Signature Strap is crafted from genuine alligator leather — not embossed calfskin, the real thing. Each scale pattern is unique, and the matte finish gives it a refined presence that catches light without being flashy. The leather is supple from the start with minimal break-in needed. At 4.5–2.2mm thick, it balances presence and wearability nicely.
What makes this pairing work on the Laco Kempten 39 Type B is the contrast — the refined case finishing against the texture creates visual interest without conflict. With a case, the proportions stay balanced.
Worth a look in other colourways:
- Matte Navy Alligator Signature Strap
- Matte Himalayan Alligator Signature Strap
- Matte Mahogany Alligator Signature Strap
- Matte Dark Brown Alligator Signature Strap
3. Best Everyday — Natural Pueblo Slim Strap
For daily wear, comfort and versatility matter more than anything else.
The Natural Pueblo Slim Strap features Buttero leather from the Walpier tannery in Italy. This vegetable-tanned leather develops one of the most beautiful patinas in watchmaking — scratches blend into the surface and the colour deepens over time. If you enjoy watching your strap age gracefully, this is the one. At 2.2mm thick, it balances presence and wearability nicely.
Paired with the Laco Kempten 39 Type B's distinctive dial, this strap adds a layer of personality that the factory option does not offer. The case thickness means a padded strap like this one feels proportional and substantial.
The kind of strap that earns a permanent spot in your rotation.
If this style appeals but you want a different tone:
- Grigio Pueblo Slim Strap
- Dark Brown Pueblo Slim Strap
- Navy Pueblo Slim Strap
- Cognac Pueblo Slim Strap
4. Best Minimalist — Green Shell Cordovan Slim Strap
Sometimes less is more. This strap proves it.
The Green Shell Cordovan Slim Strap is crafted from premium materials with careful attention to detail and construction quality. At 2.2mm thick, it balances presence and wearability nicely.
On the Laco Kempten 39 Type B, this strap preserves the watch's go-anywhere character. The case at thick pairs naturally with the padded construction without creating any imbalance on the wrist.
It's the kind of pairing that makes you wonder why you didn't try it sooner.
Other colours worth considering:
- Black Shell Cordovan Slim Strap
- Navy Shell Cordovan Slim Strap
- Cognac Shell Cordovan Slim Strap
- Natural Shell Cordovan Slim Strap
5. Best Casual — Whiskey Waxy Slim Strap
Weekend straps should feel effortless. This one nails that.
The Whiskey Waxy Slim Strap features waxy pull-up leather with a rich, oily finish that shifts and lightens with wear. The resulting patina is what leather enthusiasts live for — a lived-in character that cannot be replicated by any other material. At 2.2mm thick, it balances presence and wearability nicely.
The Laco Kempten 39 Type B's 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.
The kind of strap that earns a permanent spot in your rotation.
6. Best Sporty — Mocha Babele Slim Strap
Not every sporty strap needs to be water-resistant — sometimes it is about the texture and attitude.
The Mocha Babele Slim Strap features Buttero leather from the Walpier tannery in Italy. This vegetable-tanned leather develops one of the most beautiful patinas in watchmaking — scratches blend into the surface and the colour deepens over time. If you enjoy watching your strap age gracefully, this is the one. At 2.2mm thick, it balances presence and wearability nicely.
Paired with the Laco Kempten 39 Type B's distinctive dial, this strap adds a layer of personality that the factory option does not offer. The case thickness means a padded strap like this one feels proportional and substantial.
Simple, effective, and genuinely enjoyable to wear.
Alternatives in the same family:
- Natural Babele Slim Strap
- Jean Grey Babele Slim Strap
- Moss Green Babele Slim Strap
- Denim Babele Slim Strap
7. The Wildcard — Black Rubberised Leather (Togo) Signature Strap
Think of this as the strap you didn't know you needed.
The Black 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. At 4.5–2.2mm thick, it balances presence and wearability nicely.
The Laco Kempten 39 Type B's 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.
The kind of strap that earns a permanent spot in your rotation.
If this style appeals but you want a different tone:
- Navy Rubberised Leather (Togo) Signature Strap
- Colibri Rubberised Leather (Togo) Signature Strap
- Hunter Green Rubberised Leather (Togo) Signature Strap
- Taupe Rubberised Leather (Togo) Signature Strap
A Note on Buckle Colour
Quick but important: always match your buckle to your case. The Laco Kempten 39 Type B's 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 Laco Kempten 39 Type B
Swapping straps on the Laco Kempten 39 Type B is one of the easiest upgrades you can make — and with Delugs straps, you don't even need a tool.
If your Laco Kempten 39 Type B 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 Laco Kempten 39 Type B uses a standard 17mm lug width, and all Delugs straps in 17mm will fit perfectly.
Frequently Asked Questions
What is the lug width of the Laco THE THE LACO KEMPTEN 39 TYPE B 2025?
The Laco THE THE LACO KEMPTEN 39 TYPE B 2025 has a 17mm lug width. While 17mm is less common than 20mm, there is still a strong selection of quality straps available. All Delugs straps are available in 17mm.
What is the reference number for the Laco Kempten 39 Type B?
The reference number for the Laco Kempten 39 Type B is THE THE LACO KEMPTEN 39 TYPE B 2025. 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 Laco versatile watch?
The Kempten 39 Type B is one of the most versatile watches in the Laco lineup — it takes both dressy and casual straps equally well. That's part of what makes it such a rewarding watch for strap changes. Don't be afraid to experiment.
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 Laco Kempten 39 Type B?
The Kempten 39 Type B's versatile nature means it works with almost everything. Start with what matches your most common wearing occasion — rubber or sailcloth for active use, nubuck or waxy leather for everyday, and alligator or saffiano for dressier moments. The Strap Finder makes it easy to browse by material and style.
Does Laco use quick-release spring bars?
Most Laco 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 Laco THE THE LACO KEMPTEN 39 TYPE B 2025?
The Laco Strap Finder shows every Delugs strap compatible with the THE THE LACO KEMPTEN 39 TYPE B 2025, 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 Laco Kempten 39 Type B is that it rewards experimentation. A dressy alligator for the office, nubuck for the weekend — each strap brings out a different side of the watch.
Use the Laco Kempten 39 Type B 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 Laco Strap Finder lets you browse the full lineup and find your match.
Not sure which strap is right for your specific Kempten 39 Type B? 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
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