The original model of this mechanical wristwatch was developed 30 years ago. The particular characteristic is that it shows a day and night display at nine o’clock which is designed in the form of a titanium dome. Thanks to the ­Super-LumiNova coating, the stars shine on the night side. The hands and index displays are easily readable at any time due to this illuminating material. At three o’clock, the date is shown in the form of a three-day display. A funnel-shaped scale at six o’clock opens a view to the seconds wheel. The watch dial construction contains 19 components altogether.