Both automatic and mechanical watches maintain time using a complex network of gears, springs and other mechanisms. (Some timepieces, known as a skeleton watch, have these gears and springs on display within the watch face).
Where they differ, however, is their power source. While an automatic watch uses a self-winding mechanism powered through a wearer's movements, a mechanical watch is hand-wound and uses a mechanical movement to keep time.
Automatic watches for women and men are generally low maintenance, requiring no battery. This means that it'll never run flat (as long as it's worn), with an energy reserve that lasts a few days. They are loved for their classic design and intricate beauty, with most watches featuring a glass window on either the front or back of the case that lets you watch the cogs and gears turn.
Mechanical watches provide a link to the past with their vintage appeal, celebrated for their timelessness and superior craftsmanship. Like automatic watches, they are also prized for their durability and long life, running without the need for batteries.
A mechanical watch (like a chronograph, for example) is a great timepiece and comes with a rich legacy in watchmaking dating back centuries. Some people even form an emotional attachment to their mechanical watch, often passing them down as heirlooms.