Movements
Balance Spring
A fine spring attached to the balance wheel that regulates oscillation.
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Watch Glossary
Explore essential terminology from movements and complications to collector language, materials and finishing.
13 terms
Movements
Balance Wheel
The oscillating component that regulates the rate of a mechanical watch.
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Barrel
The drum that contains the mainspring and stores energy for the movement.
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Beating Heart
A marketing expression often used for a visible balance or escapement.
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Bezel
The ring surrounding the crystal, sometimes fixed and sometimes rotating.
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Bicompax
A chronograph dial layout with two sub-dials, usually positioned horizontally.
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Big Date
A large date display using two separate discs.
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Black Polishing
A high-grade polishing technique creating a mirror surface that appears black at certain angles.
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Boutique Edition
A model distributed through selected brand boutiques.
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Box Crystal
A tall crystal with pronounced vertical sides and a domed top.
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Bracelet
A metal watch band composed of articulated links.
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Breguet Hands
Elegant hands with hollow circular tips, named after Abraham-Louis Breguet.
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Brushed Finish
A satin-like surface treatment with fine directional lines.
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