Features: Hand electricity generator model, interesting science and education works, exercise manual brain ability, show hand cranked electricity. Let your creativity flow as you explore world of science through this educational toy. This hand crank generator model is a fascinating educational toy that allows children to experience the principles of electricity. This is a good way to teach and learn about generating electricity. Perfect for students, educators, and science enthusiasts who are interested in hands on learning. Specifications: Component: Metal Size: about 17.3x8.8x12cm/6.81x3.46x4.72'' Package Includes: 1 Pc Hand Crank Generator Model note: Please allow 1-3cm errors due to manual measurement. Due to difference betweeen different monitors,the picture may not reflect the actual color of the item.