My Mudita Radiant Automatic Has Started Running Very Fast Or Very Slow. What Happened?

The most common cause of a sudden, significant change in accuracy is the magnetization of the movement. 

Please contact our service center or a professional watchmaker, who can quickly and easily demagnetize the watch. Another possible cause could be a strong shock or impact that may have displaced a component within the movement, which would also require a watchmaker's attention.