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neetstuf-4-u
Posted February 17, 2021 - 3:46pm

In reply to by LisaD

Automatic is a movement with a swinging weight inside that winds a mainspring.

Hand wind is just that.  A Duo-Wind is an early automatic that can also be wound by hand. Most all automatics (self winding) are Duo-wind.

Accutron, Accuquartz (an early quartz crystal /Accutron Hybrid) and quartz movements have their power supplied by a battery. The kinetic power to run the watch is from electrically stimulated vibration of a tuning fork (Accutron), quartz crystal or a combination (Accuquartz).

Subject watch is considered a self winding or automatic watch. Early automatics were referred to as Duo-wind, then self winding, and finally automatic.

Hand winding and automatics fall under the general category of "mechanical". All others are considered "electronic" for lack of a better word.