Features: According to the principle of optics, the light energy will be converted into kinetic energy and make the blade shake automatically as long as there is sunlight. also helpful to relieve the eye strain, which is very suitable for office supplies decoration, home decoration and car decoration. Parameters: Product name: Innovative Solar Powered girl Size: about 10.5*6.5*6.5cm/*4.13*2.55*2.55'' Product weight: about :35g Main material: ABS Power: It can absorb the sunlight and shake head automatically. (No battery required. ) Packing list： Solar Dancing girl X 1