The new TUDOR Black Bay Pro model reflects the heritage of TUDOR watches used by pioneering explorers throughout their history. Built with a 39-millimetre diameter stainless steel case, fixed steel bezel and a Manufacture Calibre with built-in GMT function, this is a tool-watch designed for professional use. The Black Bay Pro is equipped with many new and unique aesthetic details, notably a new winding crown which has been designed for maximum grip and applied hour markers made from monobloc luminous ceramic that considerably increase the luminous surface of the hour markers. On the dial of the TUDOR Black Bay Pro, the reference time is indicated by an angular yellow 'Snowflake' hand, which completes a lap of the dial every 24 hours. Local time is indicated by another, shorter 'Snowflake' hand set by a jumping hour, which can be moved either backwards or forwards. Completing the new innovations of the TUDOR Black Bay Pro is the new TUDOR 'T-fit' rapid size-adjustment system.