Zenith introduces a particularly ingenious complication in its Captain Winsor Annual Calendar. After staging the power-reserve, moon-phase and dual time-zone functions in its various models, the line of Captain chronograph launched in 1952 is now enriched with a useful and clever complication. Stemming from a new partnership with the International Horology Museum, this timepiece equipped with a self-winding El Primero movement indicates the date, the day of the week and the month while requiring only one annual adjustment. To ensure perfect readability, the three indications are placed on three concentric discs beautifully arranged on a silver-toned or midnight blue dial framed by a steel case, or a silver-toned dial in a rose gold case.