I just bought a watch. This is called optical kinetic energy. I don't know what this means.

Photokinetic energy is the core technology of Citizen. Photokinetic watches absorb any visible light source and convert it into kinetic energy to drive the watch to run continuously.

The rechargeable battery used in the optical kinetic watch does not use harmful metals such as mercury and cadmium, and does not use other harmful substances such as freon in the production process, and has passed various strict certification standards.

Extended data:

The optical power watch was successfully developed by Citizen, which is the third generation watch with the latest technology. It is characterized by using light energy as power.

Photodynamic watches are more accurate in time and run at the high and stable oscillation frequency of the synchronous oscillator. Its oscillation frequency is 32,768 Hz/s, which is more than 4,000 times that of a mechanical watch. In principle, it is enough to judge that the time accuracy of mechanical watches is not the same as that of optical movement watches. (Except for some optical dynamic watches with an annual error of 10 second), optical dynamic watches measure the time accuracy according to the monthly error, and the error standard is generally-15 second ~+ 15 second/month.

References:

Principle of Photokinetic Energy-Photokinetic Energy-Citizen official website (China)?