By absorbing sunlight, a device that converts solar radiation energy into a large or small diameter by photoelectric effect or photochemical effect
When sunlight is incident on a solar cell, photon energy excites electrons of the semiconductor material to generate an electronic power source, providing motor power
Suitable for children over 8 years old
Under normal circumstances, please use it under the sun, but the sun is strong under different conditions. In a strong situation, when you put it in the sun, you can move it. In a non-strong situation, it takes a few seconds to a few minutes to store energy
