Materials
Cabochon
A rounded polished gemstone often set into a crown.
Read definition →TimeHunter Encyclopedia
Watch Glossary
Explore essential terminology from movements and complications to collector language, materials and finishing.
20 terms
History
Calatrava Cross
A cross emblem associated with Patek Philippe.
Read definition →Movements
Calibre
The specific design or model designation of a watch movement.
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Cam Chronograph
A chronograph controlled by a cam-and-lever mechanism rather than a column wheel.
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Caseback
The rear cover of the watch case, either solid or transparent.
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Ceramic
A hard, scratch-resistant material often used for bezels and cases.
Read definition →Dial
Chapter Ring
A circular scale around the dial carrying minute or hour markings.
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Chronograph
A watch with an integrated stopwatch function.
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Chronometer
A movement or watch certified to meet defined precision standards.
Read definition →Technical
Chronometric Performance
The overall precision and stability of a timekeeping movement.
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Clasp
The fastening mechanism of a bracelet or strap.
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Co-Axial Escapement
An escapement architecture designed to reduce sliding friction and improve long-term stability.
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Collector Premium
Additional value created by rarity, provenance, condition or desirability.
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Column Wheel
A rotating control component used in higher-end chronograph mechanisms.
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Complication
Any watch function beyond the basic display of hours, minutes and seconds.
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COSC
The Swiss Official Chronometer Testing Institute, known for certifying movement accuracy.
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Crown
The external control used to wind the watch and adjust its settings.
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Crystal
The transparent cover protecting the dial, commonly made from sapphire, mineral glass or acrylic.
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Cyclops
A magnifying lens positioned over the date display.
Read definition →Craftsmanship
Côtes de Genève
Decorative parallel wave stripes applied to movement components.
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