The characteristic features of theHeritage Black Bay Dark model centre on the 41 mm wide steel case, finished
with a black PVD-treated coating.

Directly derived from the thin filmtechnology originally developed by NASA for its various space programmes, PVD or “Physical Vapour Deposition” enables practically any inorganic material to be bonded with metals. The Heritage Black Bay Dark has an entirely satin finished matt finish, giving it the appearance of black military utility equipment.

THE TUDOR MANUFACTURE CALIBRE MT5602
This is a variant of the TUDOR Manufacture Calibre developed for the Heritage Black Bay model. It displays hours, minutes and seconds, and bears the reference MT5602, in which “MT”stands for “Manufacture TUDOR”.

In 2015, TUDOR announced its firstManufacture Calibre in its history. A high-performance calibre of excellent precision and proven robustness, it offers a 70-hour power reserve meaning that its wearer can, for example, take off the watch on Friday evening and put it on again on Monday morning without having to wind it. Beating to a frequency of 28,800 beats/hour or 4Hz, the movement is regulated by a variable inertia oscillator with silicon balance spring, held in place by a traversing bridge – a guarantee of its robustness. Furthermore, the movement is certified by the Swiss Official Chronometer Testing Institute (COSC).

BIG CROWN ANDSNOWFLAKE HANDS
The Black Bay Dark features theparticularly prominent winding crown from the famous 7924 reference of 1958, aka the Big Crown, while its characteristic angular hands, known as snowflake, were borrowed from TUDOR watches used by the French National Navy in the 1970s.