Doxa S.A.

Doxa S.A. is a Swiss company, founded in 1889, that manufactures watches. Doxa is best known for its diving watches. Between 1968 and 1978 DOXA became part of the Synchron S.A.. in 1978 DOXA S.A. was acquired by Aubrey Freres S.A. and then was sold to the Jenny family in 1997. In 2002 Doxa has introduced re-editions of its watches and timepieces in limited quantities.

Doxa, founded in 1889 by Georges Ducommun, began as a maker of dress watches and other timepieces. Over the years, Doxa gained in size and branched out into other timekeeping markets. (Wristwatches, Armbanduhren, Montres-bracelets; Brunner, Gisbert L; Pfeiffer-Belli, Christian; Koneman, 2006)

In the late 1960s Doxa decided to devote resources to create a watch to be used for diving. Tests indicated that an orange face was more visible in murky water. Doxa also consulted with divers, including Jacques Cousteau, then chairman of "U.S. Divers," and Claude Wesly (a Cousteau companion and the first man to spend seven days thirty-three feet underwater). A staff of engineers and professional divers was assembled to create a watch with the required features. The Sub300t was purchased in quantity by U.S. Divers, who resold the watch in the United States.

The Doxa Sub300t features an orange face, intended to make it more visible in the water. It has a rotating bezel with the official US Navy air dive table for no-decompression dives engraved onto its surface. The watch could be used to calculate decompression times, and other information useful to divers. It was rated to work 300 meters below sea level, and later versions were introduced that could work up to 750 meters below sea level. Other watchmakers then followed with similar bezels, as well as different watch faces.

It released the first publicly available dive watch with helium release valve, named the Conquistador. In certain diving situations, helium can penetrate the watch seals and cause a pressure buildup in the watch, eventually blowing the crystal off the watch face. Rolex invented and introduced the first dive watches with a helium release valve in 1969, which prevented this helium buildup. While this was a major advance at the time, few actual watches with this feature were produced. Doxa introduced the Sub300t Conquistador in 1969 featuring a helium release valve. According to the sales brochures and advertisements in Skin diver magazine, DOXA was the first watch company to introduce this device to the public for general sale. Rolex was manufacturing watches with the Helium Release Valve at the same time, but was only selling them to Commercial Diving Companies such as COMEX. Rolex offered the Sea Dweller with Helium Escape Valve to the public in 1972.Omega also eventually introduced a helium release valve, in its Seamaster watch.

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