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People need to keep track of time. In case you did not know, the origins of pocket watches date back to Romans- while taking advantage of the invention of the sundial, added a particular contribution to be able to calculate the night hours. They did it through a candle marked so that the sail was full the entire night, and each brand represented a portion of it.It was not until the third century AD when the first came hourglasses (a legacy of a complicated gadgets that measured time by the passage of water from other cubicles). The first engine-driven pocket watches appeared only in the eighth century. Obviously, it was very simple engine, powered by a set of weights, depending on the time it took to go down as marking the hours. For its part, the first pendulum clock, as we know it today, did not appear until the seventeenth century by the contributions of Galileo. As for pocket watches, they first appeared in the early twentieth century at the hands of the Cartier and the design of Alberto Santos, a Brazilian inventor who came up with the original idea of putting a leash on a clock. The invention, how could it be otherwise, Cartier created a sensation and sold under the name of Cartier Santos. Today, technological advances bring new perspectives. Imagine 15 days if the clock was not used. Currently allows up to 6 months in normal watches up to 4 years duration in Auto Relay with technology. The latter stops the movement of the pointers (which are the most energy consuming) if the pocket watches are not used for 3 days. In this sense, you can find all sorts of models and technological aspects. Some come with Eco-Drive technology and charge the internal battery via a solar panel cleverly concealed in the dial. Like common automatic models, they spend several months in the dark and keep the time. Some models stop the movement of pointers to stop receiving light and can remain in hibernation for four years without light. Mechanical pocket watches work in most cases driven by a coil spring which in turn is wound "giving string" or by means of a counterweight which rotates when the person wearing the watch hand moves eg walking (breakers). Most mechanical watches today are automatic, so the term "auto mechanic" was shortened to automatic. It is considered a jewel. For obvious practical choice is a quartz clock.
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