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If you possess an automatic watch, you know that the only ways in keeping the automatic watch fully wound are either by keeping the watch worn so arm and wrist movements can apply kinetic movement to wind the mainspring or by manually winding it yourself. While it is generally okay to keep it stationary if it is fully wound, this can only be good for a couple of days before the watch stops functioning. If you continue to leave the watch in its nonfunctional state, the lubricants may end up congealing over time and that can affect the accuracy of the watch. To avoid this problem without wearing the watch or winding it manually, a watch winder is needed.