Minute repeater

A percussion hammers and gongs with a sound that is issued, the number of hours,quarters and minutes indicate elapsed since twelve o'clock noon or night. The wearerpushes a slider, whereby the spring is wound and the function is also activated by this movement.

Usually makes use of a repeater gongs at two different timings (low tone), quarters (sequence of high and low tone) and minutes (high tone) to indicate. Some watches have three gongs, bells called, generally governs mechanical clocks, but there are also some quartz versions this function electronic display.