The Black Bay GMT is an extension of the Black Bay line with a highly functional complication: a multiple time-zone function – also known as a GMT function. Recognisable by its rotatable bezel, which derives its deep blue and burgundy colour theme from other models in the Black Bay line, but in a matt version, the Black Bay GMT is also a nod to the early days of this watchmaking function.
Tudor
BLACK BAY GMT
M79830RB-0001
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TECHNICAL DETAILS
Collection
Black Bay GMT
Reference Number
M79830RB
Description
41 mm steel case, steel bracelet
Material
Steel
Case
41 mm steel case with polished and satin finish
Bezel
Bidirectional rotatable 48 notches bezel in steel with 24-hour graduated anodised aluminium disc in matt burgundy and blue
Bracelet
Riveted steel bracelet with polished and satin finish with folding clasp and safety catch
Movement
Manufacture Calibre MT5652 (COSC) Self-winding mechanical movement with bidirectional rotor system Built-in architecture
Dial
Black, domed
Winding Crown
Steel screw-down winding crown, with the TUDOR rose, with circular satin-brushed steel winding crown tube
Crystal
Domed sapphire crystal
Waterproofness
Waterproof to 200 m (660 ft)
An extension of the Black Bay line, the Black Bay GMT is equipped with a highly functional complication: a multiple time-zone function, also known as a GMT function. The Black Bay GMT, like its many predecessors, is recognisable by its rotatable bezel, which sports a deep blue and burgundy colour theme. But this version distinguishes itself from other models in the Black Bay line with a matt bezel.
One of the most prominent features of the Black Bay GMT is the bidirectional, rotatable bezel in matt burgundy and blue. It is calibrated for 24 hours: the 12 daylight hours are on the burgundy section and the night-time hours on the blue. Additional time zones can be indicated by a red Snowflake hand, which traverses the dial in 24 hours. The Black Bay GMT comes with a choice of a riveted steel bracelet with polished and satin finish, a “Terra di Siena” brown leather strap with folding clasp and safety catch, or a black fabric strap with a burgundy band.
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