A Legacy of Excellence and Innovation
Imagine a watch that combines aesthetics, versatility, and technical innovation, designed specifically for those who love to challenge the depths of the sea. The ZRC Heterium Watch, from the MN64 Reissue collection, is a dream come true for all lovers of the underwater world.

Introducing the ZRC Heterium Watch
The ZRC Heterium is a contemporary reinterpretation of the legendary Grands Fonds 300 from 1964. This diving watch was chosen by the French Navy to equip its divers between 1964 and 1982, and its return to the watchmaking market is a true ode to innovation and tradition.
Technical Features and Advantages
- Case and Water Resistance
The ZRC Heterium features a hexagonal monobloc case in 316L stainless steel, water-resistant up to 1000 meters and tested at 1500 meters. This unique design ensures absolute waterproofness, enhanced by the system of programmed deformation back and the Crown Protection System™, which prevents the bracelet from closing unless the crown is perfectly screwed down.

- Movement and Precision
Powered by the SELLITA SW300-1 movement in elaborated version, this watch offers a precision of +/- 5 seconds per day and a power reserve of 56 hours. The movement is also equipped with a locked micrometric adjustment and INCABLOC® shock absorber, ensuring perfect stability even in sporting conditions.
- Design and Ergonomics
The satin-finished 41.5 mm steel case is complemented by a rubber strap, offering comfortable wear. The gradient dial, transitioning from navy blue to black, evokes the depth and power of the ocean. Applied indices and the ceramic bezel enhance the watch’s elegance and robustness.

- Practical Features
The Easy Clean System (ECS®) allows internal cleaning of the bezel by a simple rinse with clear water, preventing the crystallization of sea salt. Ultra-readable “Magnum” hands and the railway track on the flange facilitate precise time reading, even in extreme conditions.
- Public Price
The ZRC Heterium Watch is available at a public price of 3,290.00 CHF (3,420 €).

Buy Your ZRC Heterium Watch Today!
Discover the ZRC Heterium Watch on the official website
The ZRC Legacy: A History of Passion and Innovation
ZRC, founded in 1904 by Edmund Zuccolo and Joseph Roche, is a Swiss brand that distinguished itself from the beginning by its innovation and quality. Initially specialized in the manufacture of technical watch bracelets, ZRC quickly evolved towards the design of revolutionary diving watches. The Grands Fonds 300®, approved by the French Navy in 1964, is one of the brand’s greatest successes. Today, ZRC continues to perpetuate its legacy by offering dive watches made with the best materials and assembled with meticulous attention to detail.
