ZRC 1904 Grands Fonds Heterium 41.5mm GF421613

The ZRC Grands Fonds combines comfort and traditional aesthetics with uncompromising technical reliability. A contemporary face of the original Grands Fonds 300®, this version with a metal bracelet has all the characteristics of a dive watch.

With its gradient navy blue/black dial, brushed steel case, and metal bracelet, this version represents the quintessential Grands Fonds 300^® dive watch.
The Crown Protection System™ helps ensure water resistance. The bracelet can only be closed if the crown at 6 o'clock is perfectly screwed down.
The ECS® system guarantees optimal rinsing after diving and removes impurities and salt crystals deposited between the unidirectional rotating bezel with ceramic insert and the case.
The hands are orchestrated by a reliable Swiss Made self-winding caliber.

GF4216121213

Case
One-piece case, screw-down case back and crown.
Programmed deformation case back, ZRC exclusive.

Diameter
41.5 mm

Material
Antimagnetic 316L stainless steel
ISO764 standard: 4800 A/m

Bezel
ECS System ^®
(patent n°1462496)
Unidirectional rotating bezel with 60 clicks.
Ceramic insert

Crown
screwed at 6 o'clock with inverted pitch (Crown Protection System™).

Sapphire crystal
3 mm domed with anti-reflective treatment

Water Resistance
Resistant up to 1000 m, tested up to 1500 m

Caliber
SELLITA “Elaboré” SW300-1

Regulation
+ 5 sec./day

Accuracy
(± 5 sec./day) = max. 0 to 10 sec./day

Winding
Automatic winding

Power reserve
56 hours

Functions
Hours – Minutes – Seconds

Bracelet
Stainless steel bracelet with "diver" extension link for urban/diving use

Material
Antimagnetic 316L stainless steel
ISO764 standard: 4,800 A/m

Clasp
Exclusive ZRC^® safety clasp

YOU CAN EXTEND THE WARRANTY FROM 3 TO 5 YEARS BY UPLOADING YOUR PROOF OF PURCHASE (I.E. THE FIRST PAGE OF THE WARRANTY, BY FILLING IN YOUR PERSONAL DETAILS) FROM JANUARY 1, 2024.

Link: ZRC Warranty Extension Form