Junghans J645.85

The Junghans J645.85 is a quartz chronograph movement based on the Swiss-parts Ronda 3520.D, assembled in Germany. Used in the Form C chronograph collection, it features 30-minute and 12-hour chronograph counters, small seconds, and date at 3 o'clock. Battery life is approximately 54 months under normal use, with a power-saving mode available when the crown is pulled out (reducing consumption by ~70%).