Electronic watch. Fundamental parts are constituted of the electronic components. The working principle of electronic watches is based on "Electro-magnetic, magnetic electric Health" designed on physical phenomena. Converted power to magnetic energy and then the magnetic energy converted to mechanical energy to drive pin hours to operate to achieve the time objective.
Transistor table. Battery as energy, transistors as switches, balance springs for the oscillating system.
Quartz watch. "Crystal" as the oscillator, electronic frequency to control the electronic motor operation, driven pointer, high accuracy.