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Watch Specifications

Reference: M79000N-0001

How to set your watch

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Diver
Hours
Minutes
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Watch
  • Winding crown

    The winding crown is used to set the time and to wind the watch if it has not been worn. The winding crown is screwed down onto the case to ensure water resistance. It must be fully tightened after each manipulation.

  • Seconds hand

    The hand indicating seconds.

  • Hour and minute hands

    The hand on the watch indicating the time.

  • Bezel

    The unidirectional rotatable bezel allows precise measurement of dive times. For safety, the bezel rotates in one direction only. It is deliberately harder to turn when the zero marker (triangle) is in the 12 o'clock position to avoid inadvertent rotation.

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CLASSIC PROPORTIONS AND TECHNICAL PROWESS

While the Black Bay line references a range of TUDOR's early dive watches, the all-new Black Bay 54 is the most true-to-form example of TUDOR’s first dive watch, the reference 7922. The 37mm case retains the classic proportions of yesteryear, yet boasts the technical prowess of TUDOR’s time-only Manufacture Calibre MT5400 and a 200m depth rating. True to form, the unidirectional bezel is devoid of any graduated hash marks, echoing the days of the early '50 when SCUBA diving was in its infancy and TUDOR produced a watch for those daring enough to engage with the burgeoning sport. The new aesthetic details, however, don’t stop at the case dimensions and bezel. The seconds hand recalls the look of the original with a lollipop design. Ergonomics have evolved as well, with a redesigned crown and bezel, both featuring historical proportions.

  • While the Black Bay line references a range of TUDOR's early dive watches, the all-new Black Bay 54 is the most true-to-form example of TUDOR’s first dive watch, the reference 7922. The 37mm case retains the classic proportions of yesteryear, yet boasts the technical prowess of TUDOR’s time-only Manufacture Calibre MT5400 and a 200m depth rating. True to form, the unidirectional bezel is devoid of any graduated hash marks, echoing the days of the early '50 when SCUBA diving was in its infancy and TUDOR produced a watch for those daring enough to engage with the burgeoning sport. The new aesthetic details, however, don’t stop at the case dimensions and bezel. The seconds hand recalls the look of the original with a lollipop design. Ergonomics have evolved as well, with a redesigned crown and bezel, both featuring historical proportions.

  • The Manufacture Calibre MT5400 displays hour, minute and second functions. It has the finish typical of TUDOR Manufacture Calibres: Its rotor in tungsten monobloc is openwork and satin-brushed with sand-blasted details, and its bridges and mainplate have alternate sand-blasted, polished surfaces and laser decorations.

  • The Black Bay 54 is fitted with an entirely satin-brushed 3-link steel bracelet, complete with the TUDOR "T-fit" clasp equipped with a system for rapid length adjustment. Easy to use, requiring no tools and offering five positions, this practical system allows wearers to carry out a fine, instant adjustment of the total length of the bracelet along an adjustment window of 8mm. The clasp features ceramic ball bearings that ensure a smooth and secure closure in addition to adding a pleasing tactile element to the action of the clasp.

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