Wristwaches operate on the same principle, whether they are automatic and hand-wound or manual wind, mechanical wristwatches. They have mechanical movement that powers and regulates the watch.
In the middle of the 19th century, the mass production of watches started. The automatic watches have been appeared in 1931, but there was no mass production until the 1940s. The modern watch is powered by an automatic mechanical movement or a battery-operated quartz movement. The quartz watch is electronic and there is no need to winding.
The automatic watch has powering with the perpetual motion of the wearer’s wrist. This movement has a half-moon disc that rotates with each movement of the arm to keep the watch wound. Like the manual wind version, the automatic is less accurate than the quartz watch. Good running automatic or manual wind watch can lose or gain up to eight seconds a day.
The mass production of hand-wound pocket and wrist-worn watches exists for about 150 years on the market. There are a few manual wind mechanical watches that were produced in 21th century, but there is a huge market for vintage manual wind watches. Manual wind watches are less popular then automatics because they need to be wound every day.
Pros and Cons
Automatic watches are easier to care. If you wear automatic watch every day you will not have need to wind it up. If automatic watch is not worn every day, then it can be wound like a manual watch or place on a automatic winder machine that stimulates wrist movement to keep the automatic wound. The handwound watches must be wind up every day.
In the eye of the beholder there are big attraction of mechanical watches. Those who own it recognize that there are big talent and precision of workmanship to create an automatic and manual wind watch than a quartz version.