What Is An Automatic Watch?
An automatic watch, also known as self-winding watch, is a mechanical watch in which there is no quartz battery but instead a mainspring that is wound automatically as a result of the natural motion of the wearer. Unlike a manual watch, which must have its mainspring wound by hand at regular intervals, automatic watches can get enough energy to power themselves simply through being worn enough long.
What Is Automatic Watch Movement?
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A normal mechanical watch has a spiral (mainspring). When wound, the metal spiral is tightened. Then as it loosens, it starts to drive the movement of the watch. After the tension is fully released, you need to wind the watch again (to tighten the spring again). But you don't have keep winding an automatic moment. It does this by using an off-center weighted rotor which spins as you move throughout the day. As it turns, it activates a ratchet system which keeps the watch wound.
Newly bought automatic watches are usually in a stopped state. So buyers need to wind them the first time they wear them. Then as long as you wear enough time every day, the automatic rotor will replenish enough energy to the timepiece.
Generally, an automatic watch should be worn for more than 8 hours a day to give it enough energy. It is recommended to wear the watch on holidays as well. In the wearer does not wear enough long or not have enough movement to power it, he can wind it manually. But it's recommended that automatic watches be manually wound as little as possible, because frequent manual winding will compromise the fine movement parts.
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