Eterna watch royal kontiki gmt eterna watches have focussed their efforts on growing their technical skills as well as enlarging their knowledge of mechanical finery and this sleek model from the royal kontiki collection is evidence of this the royal kontiki gmt model has a fantastic design element desirable most to those who enjoy the technical side to eterna watches the eta 3945 a built with a height of 59mm and case fitting diameter of 30mm the movement can bear a total of 30 jewels and