TUDOR presents a technical model named Black Bay Pro. It has a 39-millimetre diameter, a fixed steel bezel and a Manufacture Calibre with built-in GMT function. 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.