Men's Manual Winding Movement Simple Luminous Waterproof Glass Back Transparent Mechanical Wrist Watch

Winding Mechanism: Manual watches require the wearer to wind the crown to tighten the mainspring, which stores energy. This must be done regularly to keep the watch running.

Power Reserve: Typically, a manual watch has a power reserve ranging from 24 to 72 hours, depending on the design and complexity of the movement.

Mechanical Movement: They are powered by intricate mechanical movements, showcasing craftsmanship and engineering. The movements are often visible through a transparent case back.