Rolex played a remarkable role in the development of the dive watch. In 1926, Rolex successfully invented the first waterproof watch - Rolex Oyster watch in the world. These watches were  not only  waterproof but also dustproof, and were hermetically sealed, thusly named by Rolex “Oyster”. One year later, it has proved the excellent waterproof performance for the people around the world. Mercedes Gleitze worn this Rolex watch to swim across the English Channel, and the watch time was still accurate after she swam for more than ten hours. Since then, the Swiss Rolex Replica Oyster and the patented oyster case design gained public recognition. 

In 1932, Omega introduces the Marine – the first commercially available diving watch. Before that, diving watches were not readily available to consumers. Being the predecessor of today’s successful Seamaster collection, the Omega Marine was tested on the wrist of Charles William Beebe, a famous naturalist and explorer, and survived a water depth of 14 metres. This watch was not only worn by the diving pioneer William Beebe but also worn by Yves Le Prieu. Specially, the design of the Omega Marine allowed its normal watch case –worn on all other occasions as an elegant dress watch.

In the early 1930 s, Panerai began to offer all kinds of instruments for the Italian navy and worked together with the Rolex to provide them with the first batch of watches that were specially made for divers- the Panerai Radiomir. An early Panerai from that time, equipped with a Rolex Oyster case and movement. In 1938, Panerai started mass-producing the Panerai Radiomir watches, which is today considered to be the first underwater military watch worldwide. It can be said that Panerai Radiomir is the real action hero of the Panerai brand- The frogmen of the Italian navy of the 1930s and 1940s used the Panerai Radiomir on their underwater missions.