With its black dial, satin-finished steel case, and metallic wristband, this model embodies the quintessence of the Deep Sea 300 diver’s watch. The Crown Protection System™ provides a secure watertight seal. Its wristband can only be fastened if the crown at 6 o’clock is fully screwed down. Its ECS® system ensures optimal rinsing after a dive, enabling the removal of impurities and salt crystals lodged between the unidirectional rotating bezel fitted with a ceramic insert and the case. Its hands and date are driven by a reliable Swiss Made self-winding caliber.
1964 French Navy
Satin - 41,5 MM
Reference : GF41163
With the contemporary appearance of the original Grands Fonds 300®, this variation fitted with a metal wristband has all the attributes of a diver’s watch.
3 290,00 CHF
All taxes and delivery included
Screwed case back & crown
Nonmagnetic 316L Steel
ISO764 Standard: 4800 A/m
Unidirectional 60 divisions rotating bezel.
Located at 6H (Crown Protection System™). Inverted screwed thread with dual sealing
Sapphire 3 mm padded anti-reflection
300 meters proofed, tested up to 1000m
SELLITA “Elaborated” SW200-1
(± 7sec/day) = from 0 to 14 sec/day max.
Hours – Minutes – Seconds
Programmed deformation of materials
ZRC® has a strong expertise in the field of the strains studies linked to the programmed deformation of materials, which guarantees the manufacture of waterproof watches at very great depth (1000M) without resorting to an helium valve or the presence of gel in the case: In addition, it also reduces the thickness of the case making the watch more comfortable to wear. Indeed, sapphire crystal, steel and/or titanium cases and ceramics do not react in the same way to pressure and temperature variations. This recognized expertise allows the Brand to offer reliable, simple and effective watches.
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.
The exclusive ZRC® Metal band
The new Grands Fonds 300® is equipped with an automatic adjustable strap, which allows it to be worn over a diving suit. This unique embedded spring system automatically adapts to the diameter of the wearer’s wrist for unparalleled comfort. No adjustments are required, as two links on either side of the case extend to accommodate the new diameter.