Clock movements and electric motors are 2 comparable names that refer to the engines or driving pressures that make wrist watches function. "Clock movements" is the trade name and also "clock electric motors" is the term laypersons more commonly use. All the same, these systems control the instantaneous positions of the hands as well as the behavior of other components.
Clock movements (or motors) are nowadays basically black boxes, but they interface to the outdoors through a forecasted set of concentric round shafts. Each shaft rotates separately of the others and attaches to its own (hr, minute, or 2nd) hand. This estimate is normally threaded so that it can be affixed to a situation through a nut.
Older readers could recall the dangling weights and/or curled springs that utilized to drive clocks mechanically. They used rotational pressure (torque) to a primary equipment, which in turn created various other gears to turn at various, carefully determined rates. Calibrated pendulum as well as escapement combinations prevented the equipments from freewheeling.