1, the power source is different: the power of the manual mechanical watch comes from the swing of the wearer's arm, while the power of the automatic mechanical watch comes from the automatic lever inside the movement, which can rotate with the swing of the arm, thus providing power for the movement.
2. Different maintenance costs: Manual mechanical watches need to be wound regularly to ensure the normal operation of the movement. Automatic mechanical watches, on the other hand, do not need to be wound frequently, and the batteries need to be replaced regularly. Generally speaking, the maintenance cost of manual mechanical watches will be slightly higher than that of automatic mechanical watches.