What type of watch movement does not require winding by hand?

The type of watch movement that does not require winding by hand is automatic movement. This movement is a subtype of mechanical watches and is designed to harness the kinetic energy generated by the wearer's wrist movement. As the wearer moves, the rotor inside the watch spins, winding the mainspring automatically. This eliminates the need for manual winding, making automatic watches more convenient for daily wear, as long as they are worn regularly.

In contrast, quartz movements use battery power and rely on the oscillations of a quartz crystal to keep time, which certainly does not require winding at all, but that's not the focus here. Mechanical movements typically need to be wound by hand, and manual watches specifically require the owner to physically wind them to maintain their function. Thus, while quartz and mechanical types exist, automatic movements uniquely blend the mechanics of traditional watches with the effortless convenience for the wearer.