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Meet the TSUNAMI – The Ultimate Adventure-Ready Rubber Watch Strap
There’s a moment, whether you’re clambering up a muddy trail, diving into cold open water, or clocking up miles on a dusty mountain trail, when your gear either rises to the challenge or lets you down.
At ZULUDIVER, we built the TSUNAMI rubber strap for those who expect the former. No compromises. No gimmicks. Just pure, unrelenting performance designed to keep pace with your wildest adventures.
Born from the Wild. Built for It.
The idea behind the TSUNAMI wasn’t born in a boardroom. It started with a single question from our team of outdoor enthusiasts and watch nerds: “What would the perfect rubber strap look like if we made it for ourselves?”
The result? A strap engineered from the ground up using high-performance HNBR rubber — the same material used in the automotive industry to endure punishing conditions under the hood of a car. Heat, sweat, saltwater, oil — TSUNAMI shrugs them off like a force of nature. It’s also PFAS-free, because true performance shouldn’t come at the planet’s expense.
Cut-To-Size, Your Strap, Your Fit.
Everyone’s wrist is different. That’s why the TSUNAMI is a CTS (Cut-To-Size) strap. Trim it at the embossed guide lines on the underside to get the exact fit you need. Once cut, lock it in place with the HydroLock MK2 deployant buckle — forged from corrosion-resistant 316 stainless steel and fitted with six micro-adjustments for precision comfort.
Don’t worry, we’ve made it easy to get it right the first time take a look at our video guide below. Also, if you ever want to switch colours or change sizing down the line, you can pick up spare rubber parts without buying the full strap again.
Why TSUNAMI Outperforms the Rest
- Made to Measure CTS: Cut-To-Size watch straps can easily be trimmed to get the perfect length for your wrist.
- Premium HNBR Rubber: Engineered for superior durability, our premium HNBR (Hydrogenated Nitrile Butadiene Rubber) offers exceptional resistance to heat, chemicals, and oils. This ensures your strap remains robust and flexible in the toughest conditions while providing unparalleled comfort.
- Quick-Release Mechanism: Easily swap out your strap with our quick-release spring bars, allowing for effortless transitions between activities.
- HydroLock MK2 Buckle: Created from saltwater-resistant 316-grade stainless steel and designed with your comfort in mind. With six micro-adjustment holes, you can achieve a perfectly tailored fit.
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PFAS-Free:Our HNBR is free from PFAS chemicals, making it a safer and more environmentally responsible choice without compromising on comfort or performance.
- Square Wave Design: The underside distinctive square and square pattern design reduces the amount of rubber contact to your skin helping breathability and comfort during intense activities.
- Easy of Use & Safety: With a deployant buckle fitted this allows for easy opening and closing, making it simple to put on and take off your watch, but with the extra layer of security with the foldover latch to prevent accidental opening.
- Vibrant Colours: Available in a variety of colours to suit your watch, Tsunami lets you express your personal style while staying adventure-ready.
Water resistant
Quick drying
Removable quick-release spring bars
Built to Endure. Designed to Explore.
Every scratch on your case, every grain of sand in your bag, every drop of sweat — they’re all part of your story. The TSUNAMI doesn’t just survive that journey — it thrives in it.
Whether you’re deep in the backcountry, pushing limits at the gym, or just navigating everyday chaos, the TSUNAMI is right there with you. Comfortable, secure, and ready for whatever comes next.
You don’t need a strap that looks the part. You need one that plays it.
TSUNAMI by ZULUDIVER — made for your mission.
