The TUDOR Black Bay GMT is made of the right stuff. First off, it sports an incredibly useful multiple time-zone complication, or GMT function, that establishes local time without losing sight of the time in two other time zones. Recognisable by its rotatable bezel, which borrows its deep blue and burgundy colour scheme from other models in the Black Bay line, but in a matte version, the Black Bay GMT is also a nod to the early days of this high-flying aesthetic.  The all-new opaline dial perfectly complements the iconic colour scheme of the Black Bay GMT. 

Opaline isn’t quite white, instead, there’s a slight silvery hint to the dial. Through a galvanic process, a matte white-grey finish is applied to the dial, and the marker surrounds are darkened to create a noticeable contrast. Beyond being reminiscent of the mid-century boom in commercial aviation, the charming opaline dial is highly legible. The satin-brushed 41mm stainless steel case has a bidirectional rotating bezel featuring an anodised aluminium insert in burgundy and deep blue and houses a Manufacture Calibre MT5652, COSC-certified with a silicon balance spring and 70-hour power reserve and is set on a black fabric strap with a central burgundy band and buckle fastening. The domed Opaline dial has the iconic TUDOR snowflake hands a hallmark of TUDOR divers’ watches introduced in 1969, with Grade A Swiss Super-LumiNova® luminescent material. Additional time zones are indicated by a red “Snowflake” GMT hand, TUDOR's aesthetic hallmark, which rotates around the dial in 24 hours, as well as a bidirectional rotatable bezel that is also calibrated for 24 hours. The twelve daylight hours are printed on the burgundy section and the night-time hours on the blue.