sentences:  In addition, thin discs also indicate at a glance whether it is day (white disc) or night (black disc).The Runabout range is a main collection of Frederique Constant and is designed to pay tribute to the runabout gentlemen's sports boats of the Roaring Twenties.The company has sponsored the Hélice Classique Genève and Lake Tahoe Concours d'Elegance boating events, which have showcased vintage wood boats.