Breitling Premier Automatic 40 Silver · Ref. A37340351G1P1 · 20mm lug · 40mm case
At a Glance
| # | Best For | Strap | Material | Thickness |
|---|---|---|---|---|
| 1 | Overall / First Purchase | Black Epsom Slim Strap | Epsom Calfskin | 2.2mm |
| 2 | Dressy / Formal | Matte Himalayan Alligator Signature Strap | Alligator | 4.5–2.2mm |
| 3 | Everyday / Casual | Grigio Pueblo Slim Strap | Pueblo Calfskin | 2.2mm |
| 4 | Minimalist / Refined | Black Shell Cordovan Slim Strap | Shell Cordovan | 2.2mm |
| 5 | Casual / Relaxed | Fauve Baranil Signature Strap | Baranil Calfskin | 4.5–2.2mm |
| 6 | Active / Sporty | Black CTS Rubber Strap | FKM Rubber | 4.0–3.3mm |
| 7 | Comfort / Wildcard | Natural Babele Slim Strap | Babele Calfskin | 2.2mm |
I have always believed that the right strap can fundamentally change how you experience a watch. The Breitling Premier Automatic 40 Silver (ref. A37340351G1P1) proves this better than most. Its silver dial with applied Arabic numerals, small seconds at 6 o'clock, vintage Premier styling. The 20mm lug width opens up a wide range of possibilities.
The case measures 40mm with a thickness of 11.7mm — proportions that sit comfortably on most wrists without dominating them. For a dress watch, it has enough presence to anchor a strap without overwhelming it.
Here are my 7 picks — and why each one works.
Quick Specs
| Case diameter | 40mm |
| Lug width | 20mm |
| Lug-to-lug | 49mm |
| Case thickness | 11.7mm |
| Water resistance | 30m |
| Crystal | Cambered sapphire, anti-reflective on both sides |
| Case material | 18k red gold |
| Movement | Breitling Caliber 37 (ETA 2892-A2 base), automatic, 42h power reserve, COSC |
The 20mm lug width means your options are curated but well-covered. Already know what you're looking for? Browse all Breitling Premier Automatic 40 Silver-compatible straps on the Strap Finder →
1. Best Overall — Black Epsom Slim Strap
Your first strap upgrade should feel like an obvious improvement. This one does.
The Black Epsom Slim Strap features Epsom leather, tanned by Haas. The fine, uniform grain gives it a clean, contemporary look that resists scratches and moisture with ease. This is leather that looks as sharp six months from now as it does on day one. At 2.2mm thick, it balances presence and wearability nicely.
The Breitling Premier Automatic 40 Silver's 40mm case is ideally proportioned for this strap. The dress watch aesthetic is enhanced by the refined strap construction. It is the kind of pairing where both the watch and strap look better together than apart.
Once you see it on the wrist, it just clicks.
2. Best Dressy — Matte Himalayan Alligator Signature Strap
There's dressy, and then there's refined. This strap lands squarely in refined territory.
The Matte Himalayan 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.
The Breitling Premier Automatic 40 Silver's 40mm case is ideally proportioned for this strap. The dress watch aesthetic is enhanced by the refined strap construction. It is the kind of pairing where both the watch and strap look better together than apart.
A combination that's greater than the sum of its parts.
3. Best Everyday — Grigio Pueblo Slim Strap
For daily wear, comfort and versatility matter more than anything else.
The Grigio 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 Breitling Premier Automatic 40 Silver's distinctive dial, this strap elevates the overall look without competing for attention. The 11.7mm case thickness means a padded strap like this one feels proportional and substantial.
A combination that's greater than the sum of its parts.
4. Best Minimalist — Black Shell Cordovan Slim Strap
Sometimes less is more. This strap proves it.
The Black 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 Breitling Premier Automatic 40 Silver, this strap adds a layer of sophistication that plays well with the dressy aesthetic. The 40mm case at 11.7mm thick pairs naturally with the padded construction without creating any imbalance on the wrist.
5. Best Casual — Fauve Baranil Signature Strap
Casual doesn't mean careless — this strap adds character without trying too hard.
The Fauve Baranil Signature Strap is crafted from premium materials with careful attention to detail and construction quality. At 4.5–2.2mm thick, it balances presence and wearability nicely.
Paired with the Breitling Premier Automatic 40 Silver's distinctive dial, this strap elevates the overall look without competing for attention. The 11.7mm case thickness means a padded strap like this one feels proportional and substantial.
Simple, effective, and genuinely enjoyable to wear.
6. Best Sporty — Black CTS Rubber Strap
Function first, style a close second. This water-resistant pick balances both.
The Black 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. At 4.0–3.3mm thick, it balances presence and wearability nicely.
The Breitling Premier Automatic 40 Silver's 40mm case is ideally proportioned for this strap. The dress watch aesthetic is enhanced by the refined strap construction. It is the kind of pairing where both the watch and strap look better together than apart.
Simple, effective, and genuinely enjoyable to wear.
7. The Wildcard — Natural Babele Slim Strap
Think of this as the strap you didn't know you needed.
The Natural 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.
The Breitling Premier Automatic 40 Silver's 40mm case is ideally proportioned for this strap. The dress watch aesthetic is enhanced by the refined strap construction. It is the kind of pairing where both the watch and strap look better together than apart.
A combination that's greater than the sum of its parts.
A Note on Buckle Colour
Quick but important: always match your buckle to your case. The Breitling Premier Automatic 40 Silver's 18k red gold case calls for a gold buckle to match. 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 Breitling Premier Automatic 40 Silver
Swapping straps on the Breitling Premier Automatic 40 Silver is one of the easiest upgrades you can make — and with Delugs straps, you don't even need a tool.
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 Breitling Premier Automatic 40 Silver uses a standard 20mm lug width, and all Delugs straps in 20mm will fit perfectly.
Frequently Asked Questions
What is the lug width of the Breitling A37340351G1P1?
The Breitling A37340351G1P1 has a 20mm lug width. While 20mm is less common than 20mm, there is still a strong selection of quality straps available. All Delugs straps are available in 20mm.
What is the reference number for the Breitling Premier Automatic 40 Silver?
The reference number for the Breitling Premier Automatic 40 Silver is A37340351G1P1. 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 rubber or casual strap on a Breitling dress watch?
Absolutely. While the Premier Automatic 40 Silver leans dressy, pairing it with a rubber or casual leather strap opens it up for everyday and weekend wear. Many collectors find that a nubuck or waxy leather strap transforms a dress watch into a versatile daily wearer without losing its character.
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 Breitling Premier Automatic 40 Silver?
For a dress watch like the Premier Automatic 40 Silver, alligator and chèvre leather are the most natural fits — they complement the refined aesthetics without overpowering the watch. For everyday versatility, saffiano and nubuck offer a balance of formality and durability. Our Strap Finder can help narrow down the best option for your style.
Does Breitling use quick-release spring bars?
Most Breitling 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 Breitling A37340351G1P1?
The Breitling Strap Finder shows every Delugs strap compatible with the A37340351G1P1, 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 Breitling Premier Automatic 40 Silver 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 Breitling Premier Automatic 40 Silver 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 Breitling Strap Finder lets you browse the full lineup and find your match.
Not sure which strap is right for your specific Premier Automatic 40 Silver? 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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