ZRC Grands Fonds 300 SMOKE tropicalized dial rubber strap 39 mm

Grands Fonds Heritage: The return of a legend

The ZRC Grands Fonds Heritage GF381318 “Smoke” pays tribute to an icon of French military watchmaking. Inspired by the original model developed for French Navy divers in the 1960s, this watch is not a simple reissue: it is a rare and contemporary reinterpretation, embodying both the spirit of a bygone era and modern watchmaking standards.

Tropicalized design and exceptional ergonomics

The smoked brown dial, known as “tropicalized,” recalls the natural wear and tear of vintage watches that have stood the test of time and missions. Tinted with nostalgia, it varies subtly depending on the lighting, oscillating between caramel and deep brown reflections. This unique play of light offers rare visual depth, highlighted by a 3 mm thick domed sapphire crystal with anti-reflective treatment for perfect readability, even underwater.

The hexagonal 316L steel case, the undisputed signature of the Grands Fonds line, is designed to withstand extreme environments while offering modern ergonomics. Its unidirectional rotating bezel with 60 divisions and ceramic insert ensures optimal safety during dives, with excellent grip even when wearing gloves.

Exclusive technical features

• The ZRC GF381318 is not only a beautiful diver's watch: it also benefits from exclusive technologies developed by the Swiss brand:
• CPS (Crown Protection System): positioned at 6 o'clock, the screw-down crown is protected to prevent accidental opening, ensuring maximum safety underwater.
• Programmed deformation case back: in the event of overpressure due to a leak, the case back is designed to deform before the glass breaks, thus protecting the mechanical heart of the watch.
• Water resistance to 300 meters: no helium valve, thanks to an ingenious and proven 100% mechanical design.

Sellita SW200-1 automatic movement

On the movement side, this ZRC features a sophisticated version of the Sellita SW200-1 caliber, offering:

• 41-hour power reserve
• Accuracy of +/- 7 seconds per day
• Bidirectional automatic winding
• Frequency of 28,800 vibrations per hour (4 Hz)

Reliable, proven and easy to maintain, this movement ensures the consistency required of a tool watch of this caliber.

Tropic FKM strap: comfort and vintage style

The sand-colored FKM rubber strap, resistant to UV rays and salt, is fitted with a pin buckle. It is inspired by the legendary TROPIC straps of the 1960s, with a perforated pattern and flexibility designed to offer maximum comfort, even when worn for long periods. It further enhances the vintage character of the piece while ensuring unfailing durability.