Sicura Hexa 400: The 1968 Dive Watch Legend Returns
Channeling the spirit of 1968, the new Sicura Hexa 400 revives the brand's iconic hexagonal, dual-crown design with modern Swiss engineering and serious 400-meter water resistance.
By NickAugust 5, 2026 6 min read 0 views
IN THIS ARTICLE
In 1968, Sicura was on the map. The brand was producing tough, affordable, and seriously cool tool watches that captured the spirit of the era. Now, they're channeling that history directly into a new watch: the Hexa 400, a modern diver with a story to tell.
40mmCase
$1,708Price
38hPower Reserve
400mWater Res.
The Hexa 400 is a direct descendant of a vintage Sicura Diver 400. It brings back the distinctive hexagonal case and dual-crown "compressor" style that defined so many great dive watches of the 60s and 70s. This isn't just a tribute; it's a legitimate continuation.
Built in Grenchen, Switzerland, the watch is a full-fledged modern diver. It packs a robust Swiss automatic movement and specs that can handle serious underwater duty. Let’s dive into what makes this collection tick.
The Heart of the Sicura: A Swiss Workhorse
Inside every Hexa 400 is the Sellita SW200-1 in Élaboré grade. This is one of the most trusted and proven automatic movements on the market today. It's essentially Switzerland's go-to caliber for a reason.
The movement beats at a modern 28,800 vibrations per hour (4 Hz). This high frequency gives the seconds hand a smooth sweep and contributes to better timekeeping stability. The power reserve is a stated minimum of 38 hours.
What "Élaboré" Grade Means
Sellita offers the SW200-1 in a few different grades. Élaboré is a step up from the base "Standard" version. It's adjusted in more positions for better accuracy and often features upgraded components.
This attention to detail ensures the watch performs reliably right out of the box. For a tool watch at this price point, it's exactly the kind of quality you want to see.
The dual-crown compressor case is a hallmark of vintage super-compressor dive watches. One crown operates the movement, while the other rotates the internal bezel, protecting it from accidental knocks.
A Case with Character
The most striking feature of the Hexa 400 is its case. Forged from 316L stainless steel, its hexagonal shape is a direct callback to the brand's glory years. It’s a design that stands out in a sea of round watches.
The dimensions are also thoughtfully chosen. A 40mm diameter and a 46mm lug-to-lug measurement suggest a very wearable watch. These numbers should make it comfortable on a wide range of wrists, which isn't always a given for a 400-meter diver.
At 14mm thick, it has presence, but it's not over the top. The watch also features twin screw-down crowns at 2 and 4 o'clock, a key part of its compressor-style functionality and aesthetic.
Dual Bezels and Serious Lume
Sicura didn't stop with an internal bezel. The Hexa 400 also has an external ceramic bezel, giving you two ways to time events. Ceramic is a great choice here—it’s extremely scratch-resistant and won't fade over time.
For low-light visibility, the watch uses two different colors of Super-LumiNova. The hands and hour markers glow blue, while the bezel scale glows green. This two-tone application makes it incredibly easy to read at a glance in the dark.
The Sicura HEXA 400 | Black
The black dial version is the classic, go-to tool watch of the collection. Its matte black surface prevents reflections, and the applied indexes are filled with potent Super-LumiNova. A bold, oversized "12" adds a touch of retro flair.
The internal rotating bezel has a black and yellow 60-minute track. The first 20 minutes are highlighted in yellow, a visual cue common on professional dive watches for tracking decompression stops. It’s a functional detail that looks fantastic.
Paired with a brushed 316L steel bracelet, this version is stealthy and purposeful. The bracelet features a folding clasp with a safety lock and a micro-adjustment system. This is a huge plus, allowing for a perfect fit without needing to add or remove links.
The Sicura HEXA 400 | Orange
Nothing screams "70s dive watch" like a bright orange dial. This version of the Hexa 400 fully embraces the vintage vibe. Orange was originally used on dive watches for its high visibility underwater, and it has since become an iconic look.
The bold color provides a high-contrast backdrop for the hands and markers. It transforms the watch from a stealthy tool into a vibrant statement piece. This is the model for those who want their watch to have a bit of personality and pop.
The core specifications remain the same. You still get the 400-meter water resistance, sapphire crystal, and the reliable Sellita SW200-1 movement. It's the same tough watch, just with a much louder attitude.
The Sicura HEXA 400 | Blue
The final variant in the launch collection is the blue dial model. Blue has become the new black in the watch world over the last decade. It offers a splash of color while remaining incredibly versatile.
This version feels like the perfect middle ground. It's more colorful than the black model but more subdued than the vibrant orange. It can easily be dressed up or down, making it a great one-watch option for many people.
Like its siblings, it shares the same robust build quality and impressive feature set. The combination of the hexagonal case, blue dial, and yellow accents on the inner bezel creates a unique and compelling aesthetic. It’s a modern look with deep vintage roots.
Final Specifications
Let's lay it all out. The spec sheet for the Sicura Hexa 400 tells the story of a very capable and thoughtfully designed watch. The numbers back up the heritage.
| Case | 40mm × 14mm, 46mm lug-to-lug, 316L stainless steel |
| Movement | Swiss automatic Sellita SW200-1 Élaboré |
| Power Reserve | Minimum 38 hours |
| Crystal | Sapphire, multi-layer AR + anti-fingerprint coatings |
| Water Resistance | 400 m / 40 bar / 1300 ft |
| Bezel | Internal rotating bezel + external black ceramic bezel |
| Bracelet | Brushed 316L steel 3-link, folding clasp with micro-adjustment |
| Price | $1,708 |
Editor's Take
The Sicura Hexa 400 is a fantastic offering for anyone who loves vintage dive watches but wants modern reliability. For $1,708, the unique case, dual-bezel system, and Swiss movement deliver serious value. It’s a standout choice for the enthusiast who wants a tool watch with a great story that isn't on everyone else's wrist.
A Worthy Successor
The revival of a heritage model is always tricky. It's easy to get the details wrong or to miss the spirit of the original. Sicura has avoided those pitfalls with the Hexa 400.
This watch successfully captures the adventurous, design-forward energy of the late 1960s. It combines that vintage soul with the modern engineering and quality control that today's buyers expect. It's a compelling chapter in the ongoing Sicura story.
GALLERY
WRITTEN BY
Nick
I originally started VELOCE to put my skills to work, hone my app design and web development practices, and dive deeper into the world of horology. I wanted to learn more about the watches, the brands, and the incredible people behind them - the creators, the designers, and the collectors. I love discovering new timepieces and sharing their stories with the world. VELOCE is my ultimate passion project and hobby, the creative space I head to after my full-time job to build something I truly care about.
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