The Blancpain Fifty Fathoms is one of the watch world’s true originals — the first modern diving watch, launched in 1953, and still the reference other dive watches are measured against. Whether yours sees actual water time or lives mostly on dry land, the strap it ships with is only one of several ways to wear it. A well-made replacement strap can take a Fifty Fathoms from tool-watch-ready to boardroom-appropriate and back again, without the cost or wait of a boutique original. Here’s a breakdown of the strap and band options that fit Blancpain watches, and how to pick the right one.
Why Replace Your Blancpain Strap?
The Fifty Fathoms was designed as a diver’s tool first, which means most references are built to accept a quick strap change. Swapping to a fresh Blancpain strap lets you match the watch to the occasion — rubber for the pool or the boat, canvas or leather for everything else — while keeping the original strap protected from salt water, sweat, and UV exposure.
Silicone Rubber: Built for the Barakuda
The Fifty Fathoms Barakuda uses a narrower lug width than the rest of the Fifty Fathoms line, so it needs its own strap. Our rubber strap for the Fifty Fathoms Barakuda is cut to a precise 20mm, made from premium silicone rubber with a 125mm + 70mm length for a secure, comfortable fit.
FKM Fluoro Rubber: The 23mm Everyday Option
For the standard Fifty Fathoms 5000 and 5015 references, our FKM fluoro rubber strap is cut to the correct 23mm lug width with a 120mm + 75mm length. FKM holds up better than standard silicone to heat, chlorine, and extreme conditions over the long run, which makes it the strap to reach for if your Fifty Fathoms actually sees the water it was built for.
Leather & Canvas: A More Refined Alternative
If you want to dress the Fifty Fathoms down without going full sport-strap, our leather & canvas strap pairs a rugged canvas exterior with a leather lining underneath, sized to the same 23mm lug width and 125mm + 75mm length as the FKM option. It’s a strap built to move between adventure and a more formal setting without feeling out of place in either.
Canvas: The Rugged, Military-Inspired Choice
For a lighter, purely rugged option, our canvas strap takes its cues from military-style watch bands, in the same 23mm width for the 5000 and 5015 references. It’s available in colors including black, olive green, and navy blue, and fits with quick-release spring bars or a traditional buckle for an easy change.
What About the Blancpain X Swatch?
Worth a mention if you own one: the Blancpain X Swatch collaboration, the Fifty Fathoms Scuba, uses its own 22mm lug width — narrower than the 23mm standard on the 5000 and 5015, and different again from the Barakuda’s 20mm. If you’re shopping for this reference, double-check you’re ordering a 22mm-specific strap rather than the standard Fifty Fathoms width.
Getting the Fit Right Before You Buy
Blancpain uses three different lug widths across the line — 23mm on the Fifty Fathoms 5000/5015, 22mm on the X Swatch Scuba, and 20mm on the Barakuda — so it’s worth confirming which one your watch takes before ordering. Our Watch Band Size Guide covers how to measure a two-piece strap correctly, and our guide on how to measure your lug width walks through the calipers-and-ruler method if your current strap has no size marked.
Browse the complete range of Blancpain replacement straps and bands, or head to the full shop if you’re fitting a different brand.
Frequently Asked Questions
What lug width do Blancpain Fifty Fathoms straps use?
23mm is standard for the Blancpain Fifty Fathoms 5000 and 5015 models. The Fifty Fathoms Barakuda is an exception, using a narrower 20mm lug width, so it’s worth confirming your exact reference before ordering.
What’s the difference between silicone rubber and FKM fluoro rubber for a Blancpain strap?
Both are soft, flexible, and built for daily wear and water exposure. FKM fluoro rubber is the more resilient of the two, holding up better to heat, chlorine, and extreme conditions over time, which makes it a strong choice if you wear your Fifty Fathoms for diving or other rugged use.
Should I choose leather & canvas or pure canvas for my Fifty Fathoms?
The leather & canvas strap pairs a rugged canvas exterior with a leather lining for extra comfort against the skin, giving it a slightly more refined finish. A pure canvas strap is lighter, breathable, and available in colors like black, olive green, and navy blue, leaning more toward a military-inspired, adventure-ready look.
What lug width does the Blancpain X Swatch use?
The Blancpain X Swatch collaboration, known as the Fifty Fathoms Scuba (Air Command X Swatch), uses a 22mm lug width, distinct from the 23mm used on the standard Fifty Fathoms 5000 and 5015 references.
Are Blancpain replacement straps easy to install?
Yes. Our canvas and leather & canvas straps for the Fifty Fathoms use quick-release spring bars or traditional buckles, so you can swap them without special tools in most cases.
New to changing straps? Our complete guide to watch straps covers sizing, materials, care and strap guides for every major watch brand.
