Watch Glossary
1356 horological terms explained
Toothed wheel in the winding mechanism that prevents mainspring from unwinding during manual winding.
Proportion of gear teeth determining speed reduction between successive gear stages
Intermediate wheel system providing constant force and regulating energy from the mainspring.
Perpetual rotor, Parachrom hairspring, 48-hour power reserve, widely used in sports watches
Evolved 3135 with Chronergy escapement, 70-hour power reserve, improved efficiency
GMT-Master II exclusive, dual time module, 70-hour reserve, Chronergy escapement
Proprietary automatic winding system in Caliber 3135, featuring bidirectional winding and optimized energy transfer.
Weighted oscillating component in automatic watches that winds the mainspring via wrist motion.