Quick summary
- ZRC has introduced the Grands Fonds MN64 Titanium, a new version of its historic French Navy-inspired dive watch.
- The 41.5 mm watch uses grade 5 titanium for the case and bracelet, pairs it with a black ceramic bezel, and is rated to 3,000 metres of water resistance.
- It keeps ZRC signatures such as the Easy Clean System and Crown Protection System while adding a lighter, more technical feel to the modern Grands Fonds line.
The ZRC Grands Fonds MN64 Titanium is a purpose-built dive watch that takes the brand’s most recognisable silhouette and gives it a more extreme technical brief.
Its six-sided case, off-centre crown position and French Navy lineage are all still present, but the move to grade 5 titanium changes the way the watch wears and the way it looks.
A French Navy Shape With a New Metal Brief
The Grands Fonds design is tied closely to the model adopted by the French Navy in 1964, and ZRC’s modern revival has leaned into that functional, slightly unconventional identity since the collection returned in 2015.

For this MN64 Titanium, the case remains 41.5 mm across, which is compact for a watch rated to 3,000 metres.
The six-sided one-piece construction gives the watch its familiar stance, while titanium brings a darker, more muted tone than steel.
It’s a practical decision as much as an aesthetic one, since grade 5 titanium is lighter on the wrist, highly resistant and hypoallergenic.

Built Around 3,000 Metres of Water Resistance
The headline specification is the depth rating, with the Grands Fonds MN64 Titanium engineered for water resistance to 3,000 metres.
That number puts the watch well beyond recreational diving needs, but it also suits the ZRC character, where the design language has always been shaped by safety and underwater utility rather than desk-diver theatre.
The unidirectional bezel uses a black ceramic insert, giving the watch a tougher surface where it matters and a clean visual contrast against the titanium case.

ZRC also retains two of its key technical calling cards, the Easy Clean System and the Crown Protection System, both aimed at preserving reliability and safety during diving use.
An Abyssal Dial With Serious Legibility
The dial has a dark sunburst finish that plays into the watch’s deep-sea brief without sacrificing clarity.
Large Magnum-style hands, a lollipop seconds hand, bold numerals and heavily treated markers all use X1 Super-LumiNova for strong low-light visibility.

The date window sits at 3 o’clock and remains easy to read, which matters on a watch that’s otherwise focused on direct functional information.
The overall impression is sportier and more refined than the steel versions, with the titanium tone making the black bezel and dark dial feel especially cohesive.
SW300-1 Power Inside the Titanium Case
Inside the Grands Fonds MN64 Titanium is the automatic SW300-1 calibre in its elaborate grade.
It offers a 56-hour power reserve and is rated to a daily accuracy of plus or minus 5 seconds, giving the watch a movement specification that fits its serious exterior.
| Model | ZRC Grands Fonds MN64 Titanium |
|---|---|
| Case | Grade 5 titanium, six-sided one-piece construction |
| Diameter | 41.5 mm |
| Water resistance | 3,000 metres |
| Bezel | Unidirectional bezel with black ceramic insert |
| Dial | Dark sunburst finish with X1 Super-LumiNova |
| Movement | Automatic SW300-1, elaborate grade |
| Power reserve | 56 hours |
| Accuracy | ±5 seconds per day |
| Bracelet | Adjustable grade 5 titanium bracelet |
| Notable systems | Easy Clean System and Crown Protection System |
The Grands Fonds MN64 Titanium should appeal to collectors who like dive watches with a specific military-history thread, but don’t want another conventional round-cased instrument watch.
It’s still unmistakably ZRC, only now lighter, deeper-rated and more technical in feel.
FAQ
What is the ZRC Grands Fonds MN64 Titanium?
It’s a titanium version of ZRC’s Grands Fonds MN64 dive watch, a model inspired by the design adopted by the French Navy in 1964.
How water resistant is the ZRC Grands Fonds MN64 Titanium?
The watch is rated to 3,000 metres of water resistance.
What movement does it use?
It’s powered by the automatic SW300-1 calibre in elaborate grade, with a 56-hour power reserve and stated accuracy of ±5 seconds per day.
Why is titanium important on this model?
Grade 5 titanium makes the watch lighter than a comparable steel diver while adding strength, corrosion resistance and a darker technical look.




