Pronto - “Speed Date”

Swiss Watch Fair 1964
A perpetual calendar at your wrist is the built-in bonus which comes with the new Pronto “SpeedDate”. It has three graduation marking systems of which one is fixed (days of the week). The second (days of the month) is operated by the upper winding crown. The third, corresponding to the month of the year is marked on the outer turning bezel. By operating all systems, extensive calculations can swiftly be carried out - for example the watch can tell that the 1 7 of May, 1973 will be a Monday. Automatic movement, case made under the anti-condensation “Compressor” system and 100 per cent waterproof. (PRONTO - “SpeedDate”)