In the world of dive watches, the ZRC name represents a perfect balance between tradition and innovation. Founded in 1904 in Geneva, ZRC has always crafted distinctive, high-quality, technical watches. The Grands Fonds 41.5mm collection is the natural evolution of the legendary Grands Fonds 300®, a watch designed for professional diving that continues to impress with its robustness and design.

An Iconic and Robust Design

The heart of the collection is the monobloc case in non-magnetic 316L stainless steel, measuring 41.5 mm in diameter and 14 mm thick. This unique construction ensures superior durability, with water resistance tested to 1,500 meters, although certified for 1,000 meters. The hexagonal case design, with brushed finishes and polished details, makes the watch instantly recognizable and capable of withstanding extreme conditions.

Professional Dive Features

The Grands Fonds 41.5mm features a unidirectional bezel with 60 indexes and a ceramic insert, ideal for accurately tracking dive time. The crown, positioned at 6 o'clock, is protected by a patented Crown Protection System™, ensuring watertightness and safety in any situation. Furthermore, the Easy Clean System (ECS®) allows the bezel to be easily cleaned after exposure to salt water, preventing buildup and ensuring long-lasting durability.

Swiss Made Movement and Reliable Performance

Inside the case beats the Sellita SW300-1 Swiss automatic movement, renowned for its precision and reliability. With a 56-hour power reserve and a frequency of 28,800 vibrations per hour, this caliber guarantees stable regulation with a deviation of ±5 seconds per day, perfect for those who require a precise watch even in extreme conditions.

Variety of Dials and Style

The collection offers several aesthetic variations, all with dials treated with Super-LumiNova® X1 for optimal visibility even in the dark. Among the most popular versions are:

• Heterium: navy blue dial with black accents, sporty and elegant.

• Osmium Satin: blue satin finish, with a modern and refined look.

• Ruthenium: dark grey dial, sober and sophisticated.

• Tropical: brown shade with orange highlights, inspired by vintage 60s models.

Each model can be paired with a stainless steel bracelet or a rubber strap, ensuring versatility and comfort.

A Watchmaking Company That Celebrates History

The original Grands Fonds 300® was created in the 1960s to meet the needs of professional divers. Today, ZRC continues this tradition by offering watches that blend classic design with modern technology. The 41.5mm model pays tribute to this heritage, ideal for those seeking a robust, technical watch with a unique aesthetic.

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