The ability to display a second time zone in addition to your current time, also known as a GMT function, has become one of the most popular additional functions of mechanical wristwatches in recent years. It was therefore a logical move for Swiss watch manufacturer DAVOSA to equip its successful Ternos Professional series with this sought-after function. The Ternos Professional from DAVOSA is a true professional, equipped to accompany every diver effortlessly into the depths, transforming itself into a real eye-catcher after punctually resurfacing.

Striking high-tech material

In the GMT version, a 24-hour display, the distinguishing feature of the second time zone, is displayed prominently on a rotatable diving bezel, giving the Ternos its characteristic sporty yet functional appearance. The coloured bezel inlay is made of high-tech ceramic and is extremely scratch-resistant with a hardness (according to Vickers) of 1250 HV. It is also heat and corrosion-resistant, and proffers a fine feel thanks to a high-gloss polish.

The production of these ceramic bezels is very elaborate; a great deal of expertise is required to produce the different colours in a consistent quality and colour brilliance. Until now, DAVOSA has offered the Ternos Professional GMT in a monochrome black version and in combination with a brilliant blue, but fans of the brand requested additional options.

After more than 12 months of development, DAVOSA has now succeeded in producing a deep red, high-tech ceramic that contrasts superbly with black or dark blue, and yet forms a lasting unit with the dark nuances. The scale of the 24-hour display, which consists of a triangle, Arabic numerals and dots, is then engraved into the bezel by a high-precision laser before being filled with the contrasting colour. This creates two new variants of the Ternos Professional GMT TT in red-blue and red-black. At DAVOSA, the appendix TT stands for ‘two-tone’.

Reliability across the board

The proven quality features of the Ternos Professional GMT, with some additional refinement, can also be found in the two new additions to the series.

The well-proportioned, 200 metre- deep, (20 ATM) water-resistant case made from surgical steel with a screw-in crown proffers a moderate diameter of 42 mm and a height of 15.5 mm. From lug to lug, the Ternos Professional measures 50.5 mm across, and hides a reliable automatic DAVOSA calibre DAV 3032, which scores with a power reserve of 42 hours, under its fully threaded, screw-in case back.

The flat sapphire crystal with a magnified area has an anti-reflective coating on the inside. It permits an unimpeded view of the gloss-black, polished dial, with indices and hands equipped with Super-LumiNova in BGW09 quality. This guarantees excellent readability at all times, even in poor visibility. The GMT hand stands out clearly against the dark dial in either red or blue, depending on the colour of the bezel.

Davosa Ternos PRO TT GMT Further Details