ZRC Grands Fonds MN64 Diving Watch
Starting from 3.900 €The ZRC Grands Fonds Réédition MN64 is an iconic diving watch rooted in French military history. As early as the 1960s, ZRC equipped French Navy divers with robust timepieces designed to withstand extreme underwater conditions. This modern reissue pays tribute to that historic model while integrating contemporary technical improvements. Faithful to its tool-watch DNA, it retains its functional design, strong legibility, and patented crown system positioned at 6 o’clock. Designed for diving enthusiasts and military watch collectors, the MN64 embodies authentic heritage combined with modern technical performance, making it a highly distinctive and purpose-driven timepiece.
ZRC Grands Fonds MN64 Diving Watch
Founded in 1904, ZRC built its reputation on technical expertise and professional-grade watches. In the 1960s, the brand developed the Grands Fonds specifically for the French Navy, creating a watch capable of meeting the demanding needs of military divers. This collaboration remains central to ZRC’s identity today.
The MN64 reissue faithfully preserves the original model’s design codes, including its unique architecture and patented safety system. The screw-down crown at 6 o’clock, combined with a specific bracelet system, prevents improper use during dives, reinforcing operational safety.
The dial is clean and highly legible, with large luminescent markers designed for optimal readability. A unidirectional rotating bezel allows precise dive time measurement. This watch is aimed at enthusiasts seeking a true military diving watch—authentic, functional, and built to modern standards. It represents a perfect blend of tradition, innovation, and rugged performance.
Technical Specifications ZRC Grands Fonds MN64
- Brand: ZRC
- Model: Grands Fonds Réédition MN64 (ref. GF42163)
- Indicative price: ~€3,900
- Movement: Swiss automatic
- Caliber: ETA 2824-2 or Sellita SW200-1
- Diameter: 40.5 mm
- Thickness: ~14 mm
- Water resistance: 300 m / 30 ATM
- Materials: 316L stainless steel case
- Crystal: Scratch-resistant sapphire
- Dial: Black with Super-LumiNova hands and markers
- Strap: ZRC-specific stainless steel bracelet
- Warranty: 2 years
- Pack contents: Watch + box + manual + warranty card
The ZRC Grands Fonds MN64 Diving Watch
The ZRC MN64 stands out thanks to its unique design tailored for professional diving. Its 40.5 mm stainless steel case offers a perfect balance between robustness and comfort. The slightly increased thickness reflects the reinforced construction required for 300-meter water resistance.

One of its most distinctive features is the crown positioned at 6 o’clock. This is not just a design choice but a technical solution to prevent wrist discomfort and improve safety. Combined with a dedicated bracelet system, it ensures the watch cannot be worn improperly if the crown is not correctly secured.
The Swiss automatic movement provides reliability and precision, with a power reserve of approximately 38 hours. The sapphire crystal protects the dial from scratches, while the unidirectional bezel ensures safe use underwater.
The matte black dial prioritizes readability, with large luminescent markers for optimal visibility in low-light or underwater conditions. The entire watch reflects its military DNA—functional, durable, and uncompromising.
Military Heritage and Technical Efficiency
The ZRC MN64 is more than just a reissue—it represents true military heritage linked to the French Navy’s operational missions. Every component has been designed to meet real-world constraints, where reliability and readability are critical.
The unidirectional rotating bezel enables precise dive time tracking, essential for diver safety. Its firm action prevents accidental movement. The proprietary bracelet system enhances overall security and functionality.

Material selection, including 316L steel and sapphire crystal, ensures high resistance to corrosion and impacts. The 300-meter water resistance confirms its professional diving capabilities while remaining suitable for everyday wear.
This reissue modernizes technical standards without compromising the spirit of the original model. It appeals to demanding users who value military history and authentic tool watches. The MN64 stands as a benchmark for purpose-built diving watches.
ZRC MN64 Diving Watch: Proven Heritage
The ZRC Grands Fonds Réédition MN64 is a diving watch deeply rooted in French military history. Inspired by models used by the French Navy in the 1960s, it combines authenticity with modern performance. Its robust case, 300-meter water resistance, and excellent legibility make it a true tool watch. Powered by a reliable Swiss automatic movement, it ensures accuracy and durability. Its functional design and patented safety system give it a strong identity. This diver appeals to both military watch enthusiasts and collectors of high-performance timepieces.
Movement
The ZRC MN64 is powered by a Swiss automatic movement, typically the ETA 2824-2 or Sellita SW200-1. These calibers are known for their reliability and robustness, essential qualities for a professional diving watch. Operating at 28,800 vibrations per hour, they ensure smooth and precise timekeeping.
With a power reserve of approximately 38 hours, the watch offers practical everyday usability. These movements are also valued for their ease of maintenance and wide availability of spare parts.
ZRC’s choice reflects a focus on durability and proven performance. It perfectly suits a watch designed for intensive use, whether in professional or recreational environments.

Diameter and Materials
The 40.5 mm case is made of 316L stainless steel, known for its corrosion resistance—an essential feature for diving watches. Its robust construction ensures durability in harsh marine environments.
The finishing combines brushed and polished surfaces, reinforcing its technical look while maintaining elegance. The sapphire crystal guarantees scratch resistance and long-term clarity.
The design remains faithful to the functional aesthetics of 1960s military watches, emphasizing practicality and durability.

Water Resistance
With a water resistance of 300 meters (30 ATM), the ZRC MN64 is fully suitable for professional and recreational diving. This level of performance ensures optimal protection against water pressure.
The screw-down crown at 6 o’clock plays a crucial role in maintaining water resistance. The unique ZRC system further enhances safety by enforcing correct usage.
The unidirectional bezel adds another layer of security for dive timing. Altogether, the watch offers maximum reliability for demanding users.

Accessories
The MN64 comes with a dedicated stainless steel bracelet designed to work with the 6 o’clock crown system. This unique configuration enhances safety during use.
The package includes an official ZRC box, user manual, and warranty card. Additional strap options may be available depending on the version.
All components are designed for durability and functionality, consistent with the watch’s tool-oriented philosophy.

Warranty
The ZRC Grands Fonds MN64 comes with a 2-year international warranty covering manufacturing defects in the movement and original components.
The warranty begins from the date of purchase and requires validation by an authorized retailer. It excludes normal wear and damage caused by misuse.
ZRC offers an after-sales service network to ensure maintenance and repairs, reinforcing confidence in the product’s durability.

ZRC Grands Fonds Réédition The pros
and cons
- Authentic French Navy military heritage
- Unique patented crown system
- 300 m water resistance, true diver
- Historical and functional design
- Excellent legibility
- Noticeable thickness on the wrist
- Very specific design style
- Proprietary bracelet system
- High-end price positioning
- Less suitable for formal wear
Prices and technical specifications are subject to change. Content and photos are not contractual.