Every hour on the hour, the Bell Hora single-hand watch alerts the wearer to the passing of time with a discreet chime. The almost forgotten complication responsible for this is the Sonnerie au Passage, which MeisterSinger has revived with the Bell Hora. The ingenious mechanism that triggers the hourly chime is located between the movement and the dial. The dial is distinguished by the hours that are arranged in a spiral on a midnight blue background.