The ECS^® is a technical solution to an issue encountered by the mine clearance divers of the Marine Nationale during their many dives: salt crystallizing in the gaps between the bezel and case, thus impeding its rotation. For the 2015 re-issue of the Grands Fonds 300^®, ZRC^® has developed and patented a functional solution – the ECS^® was born. A unique system for cleaning the inside of the bezel by circulating fresh water that dilutes and evacuates the sea salt. The ECS^® is the ultimate tribute to the original Grands Fonds^® and is perfectly in tune with the brand’s identity.