Throughout their history, TUDOR watches have been chosen by some of the boldest adventurers, like the 30 explorers who embarked on the two-year British North Greenland Expedition to study Arctic ice exactly 70 years ago, with TUDOR watches on their wrists. Brand founder Hans Wilsdorf supplied watches for the members of the expedition. He had just created the first waterproof and self-winding TUDOR watch, the Oyster Prince model, and couldn't imagine a better environment for testing it than the extreme climate of the Arctic. The Black Bay Pro model reflects the heritage of those instruments used by the pioneering explorers. This is a tool-watch designed for professional use.