Glossary

Are the thin, coiled metal strips responsible for producing sound in mechanical watches. They are typically made of steel or other alloys with excellent sound-conducting properties. Gongs are shaped in a circular or spiral form and are carefully positioned within the watch movement. When struck by small metal hammers, they vibrate and produce distinct and melodic tones. 

Gongs are used in watches that feature complex functions such as minute repeaters or alarm watches. The gongs are carefully designed and tuned to produce subtle and pleasant tones when struck.

The difference between gongs and bells:

Gongs produce a series of tones that differ in pitch and duration, while bell provide only a single tone.