The Black Bay GMT is an extension of the Black Bay series and features a highly functional complication: the multiple time zone function, also known as the GMT function. Inheriting its dark blue and burgundy color theme from other models in the Black Bay series and recognizable by its rotating bezel, the Black Bay GMT also nods to the early days of this watchmaking function.

The Black Bay GMT is an extension of the Black Bay series and features a highly functional complication: the multiple time zone function, also known as the GMT function. Inheriting its dark blue and burgundy color theme from other models in the Black Bay series and recognizable by its rotating bezel, the Black Bay GMT also nods to the early days of this watchmaking function.

The Black Bay GMT is an extension of the Black Bay series and features a highly functional complication: the multiple time zone function, also known as the GMT function. Inheriting its dark blue and burgundy color theme from other models in the Black Bay series and recognizable by its rotating bezel, the Black Bay GMT also nods to the early days of this watchmaking function.

The Black Bay GMT is an extension of the Black Bay series and features a highly functional complication: the multiple time zone function, also known as the GMT function. Inheriting its dark blue and burgundy color theme from other models in the Black Bay series and recognizable by its rotating bezel, the Black Bay GMT also nods to the early days of this watchmaking function.