Production and production of watches are based on a simple and witty invention, this is the "spring", it can tighten up and store energy, but energy is released slowly, in order to promote the operation of the device and the pointer inside the watch, to display function of time, this spring means inside the watch is called the main spring.
Watches watch constructed by the header, strap (clasp) component. Which parts of the header include: movement, case, case back, mirrors, literally (often said that the dial), a pointer to the (transfer time, also known as pressed), so (some table types on request). great2usale.com
Watch works, watch is a precision instrument used to indicate the time, the principle of the system is the use of a constant cycle, continuous vibration of the vibration system as standard. If you know the vibration system completion time (oscillation period) to a watch subtotal vibration needed, and calculate the vibration frequency, then, after so many experienced vibration time is equal to the vibration period multiplied by the number of vibrations. That time = × vibration frequency vibration period www.great2usale.com