What is an automatic watch?

An automatic watch, also known as a self-winding watch, is a mechanical watch that winds its mainspring automatically through the natural motion of the wearer's arm. Unlike <a href="https://www.wikiwhat.page/kavramlar/manual%20winding%20watches">manual winding watches</a>, which require hand-winding daily, automatics use a rotor that spins with the movement of the wearer's wrist. This rotor is connected to a ratcheting mechanism that winds the <a href="https://www.wikiwhat.page/kavramlar/mainspring">mainspring</a>.

Here are some key aspects of automatic watches:

• Rotor: The heart of the automatic mechanism. Its movement, driven by the wearer's activity, is what winds the mainspring. Different rotor designs exist, some being unidirectional and others bidirectional.

• Power Reserve: Automatic watches typically have a <a href="https://www.wikiwhat.page/kavramlar/power%20reserve">power reserve</a>, which is the amount of time the watch will continue to run when not being worn. Common power reserves range from 36 to 72 hours, but some can last much longer. If the power reserve depletes, the watch will need to be manually wound or shaken to restart.

• Accuracy: While generally accurate, automatic watches are subject to variations in timekeeping depending on factors like temperature, position, and the watch's construction. They typically have an accuracy range of +/- a few seconds per day. Some higher end models undergo certifications for better accuracy such as the COSC.

• Maintenance: Like all mechanical watches, automatic watches require periodic servicing, usually every 3-5 years. This service involves cleaning, lubricating, and adjusting the movement to ensure optimal performance and longevity.

• Complications: Automatic movements can also power various <a href="https://www.wikiwhat.page/kavramlar/watch%20complications">watch complications</a>, such as date displays, chronographs, moon phases, and more. These add functionality and complexity to the watch.

• Durability: Automatic watches are generally robust and can withstand daily wear, but they are susceptible to damage from strong impacts or exposure to extreme temperatures and magnetic fields.