Specifications: Kids will learn from the mechanics of the hand-crank generator and how the energy is used to generate electricity, physics experiment equipment. No need for screws or tools, kids can easily build the mini fan within 10-15 min following the detailed instructions. Through this DIY building toy, kids can construct their very own powered mini fan that uses a hand crank gyrating motion to making the fan turn. Type: DIY Generator Toy Material: Plastic, Electronic Components Voltage: 0-3V Current: 0-1A Features: Durable, Easy to Assemble, Electricity Learning, Hand Cranked, DIY Craft Size: 8cm x 7.5cm/3.15" x 2.95" (Approx.) Notes: Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement. Package Includes: 1 x DIY Generator Toy #Buildingkit #Diy #Handcrankedgenerator #Handcrankedlight #Lantern #Lights #Scienceexperiment #Scienceexperimentskit #Sciencegeneratorbulb #Toy