Glossary: M
Watch terms starting with M.
MainspringA coiled spring that stores the energy used to power a mechanical watch movement.
Manual-Winding MovementA mechanical movement whose mainspring is wound by turning the crown rather than by an automatic rotor.
Mechanical MovementA watch movement powered by a wound mainspring and regulated mechanically, without using a battery as its primary energy source.
MoonwatchA common name for the Omega Speedmaster Professional lineage associated with NASA and crewed lunar missions.
MovementThe mechanism inside a watch that generates, regulates and displays time, and may also power additional functions.