The main reason for Kinse​​d watch walking slowly is that the oil viscosity drops over time. The movement of the watch depends on the lubrication of oil, and as the oil viscosity drops, the effect of the movement of the watch will also be affected. The same is true for mechanical watches.

When the watch runs for a long time, it will consume oil, and the oil splashed within the movement will gradually evaporate, causing the oil to become thinner, so that the watch running speed is slow. At the same time, dust enters the watch, which makes the oil more viscous, and increases the friction between the parts, leading to a decrease in running speed.

In addition, kinetic energy watches are usually equipped with an automatic winding device. When the activity level of the wearer is insufficient, the automatic winding device will not be activated, resulting in insufficient power supply, causing the watch to run slow.

In addition, the watch has a certain service life. When the service life period is exceeded, the accuracy of the watch movement will naturally decline due to the wearing of parts. As a result, the walking speed of the watch is slow.