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Edox Delfin
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MovementAutomatic, Edox caliber 88 (Sellita SW220-1 base)
Diameter43 mm
Thickness14.5 mm
Water resistance200 m (20 bar)
Weightabout 185 grams

Delfin

The model that made Edox "the Water Champion": the double-backed case and double O-ring born in 1961

Model History

The Delfin was born in 1961 as Edox's answer to the water-resistance challenge, in a decade when Swiss diving watchmaking was defining its technical standards. The model introduced a double-backed case and a patented gasket system — the "double O-ring", made of rubber and nylon — placed between crown and case, capable of guaranteeing watertightness beyond 200 meters: a result that at the time represented a genuine leap in quality over the standards of the day.

The Delfin's true innovation was not just the depth achieved, but the ability to wind the crown and set the time in complete safety even while diving, thanks precisely to the double-gasket system. It is this technical detail, more than the aesthetics, that earned Edox the nickname "Water Champion", still claimed by the brand today, and that laid the groundwork for later developments: already by 1965 the Hydro-Sub, a direct evolution of the Delfin's system with a novel tension ring on the crown, would push water resistance up to 500 meters.

Today the line continues with the "Delfin The Original" family, which reinterprets the historic model in a contemporary key: automatic day-date, chronograph, or in the open-worked "Mecano" version, all sharing the same screw-down crown with double O-ring that made its fortune. The Delfin thus remains, in the Edox catalogue, the declared starting point of the brand's entire diving vocation.

Technical Specifications

Movement
Automatic, Edox caliber 88 (Sellita SW220-1 base)
Case
43 mm, 14.5 mm thick, steel
Crystal
Sapphire
Crown
Screw-down, patented double O-ring system
Water resistance
200 m (20 bar)
Dial
Blue, luminescent indices and hands
Bracelet
Steel links, double folding clasp
Legacy
Double-backed case introduced in 1961, forefather of the Edox diving line

Main Executions

Delfin The Original Day-Date AutomaticBlue dial, steel braceletcurrent production
Delfin The Original ChronographChronograph variant, various dial colorwayscurrent production
Delfin The Original Mecano AutomaticOpen-worked movement, more technical aestheticcurrent production
Fun Fact

According to the brand itself, the double O-ring system patented with the Delfin did not remain an Edox exclusive: the double-gasket crown technology was later said to have been adopted, in evolved forms, by other major Swiss watch houses too — a technical legacy that goes well beyond the single model that made it famous.