Watch the power source is divided into two categories of mechanical watches and electronic watches:
Mechanical watches:
a common mechanical movement of 90-100 parts, more features of the movement of 1400 parts, mechanical energy is a coiled spring winding, the stored energy in the spring to promote machine to achieve the purpose of timing. The mechanical watches can be divided into two kinds of manual mechanical watches, and automatic mechanical watches:
(1) Manual mechanical watches: the hand-winding movement, turn the crown, movement springs the energy payment and to promote the watch run.
(2) Automatic mechanical watches: Automatic winding movement driving force… Read the rest








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