CROWN PROTECTION SYSTEM™
Originating from a ZRC® patent filed in 1961, the exclusive retractable lug strap system embodies a radical approach to diving safety.
Designed to eliminate any critical risk of oversight before entering the water, it is based on a simple yet fail-safe principle: as long as the crown has not been fully screwed back into its initial position, the strap cannot be secured. This mechanical impossibility makes water entry unattainable in any non-compliant configuration.
Beyond its technical dimension, this device reflects a clear philosophy: transforming potential human error into a functional impossibility, ensuring total diving safety and preventing any operational issues related to improper handling.
Today, this system has become one of ZRC’s most emblematic signatures—instantly recognizable at first glance and inseparable from the brand’s identity.
EXCLUSIVE ZRC® DIVER’S BRACELET
Rooted in a ZRC® patent filed in 1912, the bracelet system fitted to the Grands Fonds MN64TM reflects over a century of technical evolution dedicated to comfort and performance in demanding diving conditions.
The model features a solid metal bracelet incorporating, within its expandable links, a hidden spring embedded inside the structure. This exclusive mechanism enables the bracelet to automatically adapt to variations in wrist diameter.
This ingenious design offers unique flexibility: the bracelet can compress to be comfortably worn over a diving suit or any technical gear, while maintaining a perfectly secure fit.
Thanks to this integrated regulation system, wearing comfort naturally adjusts to the wrist, ensuring optimal ergonomics in all conditions. Half-links allow fine-tuning adjustments accurate to within +/- 3 mm, providing broad compatibility and a highly precise fit.
Beyond its functional purpose, this system has also contributed to shaping a distinctive aesthetic, now an instantly recognisable signature of ZRC®, identifiable at first glance.
A technical device that fully embodies the ZRC® philosophy: combining heritage, robustness, and uncompromising functionality.
“Diver” clasp
Originating from a ZRC® patent filed in 1961, the exclusive Grands Fonds® buckle embodies a radical approach to underwater safety, originally designed to meet the operational requirements of French Navy mine clearance divers.
Its unique architecture combines an anti-return system with a 360° locking mechanism, ensuring maximum security under all conditions. Every component has been engineered to eliminate any risk of accidental opening, even in the most extreme environments.
Beyond its technical purpose, the buckle stands out for the quality of its execution, reflecting the brand’s uncompromising manufacturing standards. Over time, it has become a strong identifying feature of the Grands Fonds®, illustrating the alliance between precision engineering and operational heritage.
