Solar powered, no battery needed. Energy saving and environment-friendly. When the sun shines on the solar panel, the panel makes electricity. Its micro vibration motor can be driven directly in the sunlight. Will also work when close to a strong artificial light source. Easy to assemble and demonstrates an alternative energy principle. A good educational toy for children to learn about solar power energy. Dimension: 8.5X3X3CM Package Content: 1 x new solar mouse(there are black and blue color, we will send in random color)
