ZRC 1904 Grands Fonds Heterium 41.5mm GF421618

The Grands Fonds 300® combines traditional comfort and aesthetics with uncompromising technical reliability. A contemporary version of the original Grands Fonds 300®, this version with a rubber strap has all the hallmarks of a diving watch.

With its navy blue/black gradient dial, satin-brushed steel case and FKM rubber strap, this version represents the quintessence of the Grands Fonds 300 ^® diving watch .
The Crown Protection System™ helps ensure water resistance. The bracelet can only be closed if the crown at 6 o'clock is fully screwed down.
The ECS™ system ensures optimal rinsing after diving and eliminates 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.

Earnings
One-piece case, screw-down case back and crown.
Exclusive ZRC programmed deformation caseback.

Diameter
41.5 mm

Material
Non-magnetic 316L stainless steel
ISO764 standard: 4,800 A/m

Lunette
^ECS® System
(patent no. 1462496)
Unidirectional rotating bezel with 60 divisions.
Ceramic insert

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

Glass
3mm domed sapphire with anti-reflective treatment

Waterproof
Guaranteed for 1000m, tested up to 1500m.

Caliber
SELLITA “Elaboré” SW300-1

Regulation
+ 5 sec./day

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

Loading
Automatic loading

Power reserve
56 hours

Functions
Hours – Minutes – Seconds

Strap
Rubber strap compatible with pin buckle. Inspired by the metal bracelet design, it is extremely comfortable and available in a wide range of colors.

Material
Rubber (FKM)

Buckle
Steel pin buckle

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

Link: ZRC Warranty Extension Form