In 1926, watches constructed especially for use by divers appear. They have insulated crowns (the crown is the chief point of entry for water into a watch case). It was also the year that Rolex founder Hans Wilsdorf introduces the Oyster case, which has a screwed crown, screwed caseback, and securely sealing crystal. It is the world’s first truly water-resistant case. One year later, Wilsdorf asks Mercedes Gleitze, a stenographer vying to become the first British woman to swim the English Channel, to wear an Oyster on one of her attempts. She doesn’t make it all the way, but the Rolex she wears around her neck keeps on ticking.
Blancpain presents its first dive breitling mens watches , the Fifty Fathoms. The watch is water resistant to 100 meters. (Fifty fathoms is equal to 300 feet, or about 91 meters. It is the maximum depth divers can go at the time with the equipment then available.) The watch is the result of a request by Captain Bob Maloubier, who was a secret agent for the British during WWII and then became leader of the French military’s combat diving corps. He asked Blancpain to make a watch with a black dial, large Arabic numerals, clear indications and a rotating bezel. “We wanted i