ECS™ Patent n°1462496 (Easy Clean System)
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.
Crown Protection System™
100% safety is guaranteed thanks to this exclusive strap system using retractable lugs. It is now impossible to place the watch in water without screwing the crown back into its original position. If the crown is not screwed down, the strap cannot be correctly repositioned. This effective method prevents oversights that can lead to technical difficulties.
Curved sapphire: 4 mm
The use of a Vintage 4mm glass box gives credits to the lately 1964 Spirit Grands Fonds. Thanks to its authentic design it clearly brings you back in the 70’s.
ETA 2824-2 elaborated movement or SELLITA SW200-1 elaborated
The, ETA or SELLITA, movement of the ZRC Grands Fonds 300 is composed of 25-ruby wheels, on which Incabloc shock protection was used. Extremely precise, the balance performs 28,800 oscillations per hour. With a mechanism diameter of 25.6 mm, it offers a power reserve of 38 hours.
Nonmagnetic 316L Steel
Located at 6H (Crown Protection SystemTM). Inverted screwed thread with dual sealing
Sapphire 4mm padded Vintage Glassbox anti-reflection
300 meters proofed, tested up to 1000m
ETA “Elaborated” 2824-2 or SELLITA “Elaborated” SW200-1
(± 7sec/day) = from 0 to 14 sec/day max.
Leather strap equiped with an automatic sizing folding buckle