Movements
Mainspring
The coiled spring that stores mechanical energy in a watch.
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Watch Glossary
Explore essential terminology from movements and complications to collector language, materials and finishing.
14 terms
Movements
Manual Winding
A mechanical movement wound by turning the crown.
Read definition →History
Marine Chronometer
A highly accurate timekeeper historically used for navigation at sea.
Read definition →Market
Market Price
The price at which a watch commonly trades on the secondary market.
Read definition →Certification
Master Chronometer
A certification standard involving precision, magnetic resistance and performance testing.
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Mechanical Movement
A movement powered by a mainspring and regulated mechanically.
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Micro-Rotor
A small automatic winding rotor integrated into the plane of the movement.
Read definition →Complications
Minute Repeater
A complication that chimes the time on demand.
Read definition →Dial
Minute Track
A scale marking individual minutes around the dial.
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Modular Chronograph
A chronograph module mounted onto a separate base movement.
Read definition →Case
Monobloc Case
A case constructed from a single main piece without a removable caseback.
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Monopusher Chronograph
A chronograph operated by a single push-piece.
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Moonphase
A complication displaying the current phase of the moon.
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Movement
The internal mechanism that powers and controls the watch.
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