Features: This hand crank generator model features metal gears for stable energy conversion, making it essential physics teaching tool that demonstrates electromagnetic principles through visible current output. Crafted with metal, wood, and plastic components, the sturdy construction ensures long term durability and safe handling during classroom experiments and science lab demonstrations. Ideal for school students and educators, this educational generator model teaching tool encourages hands on learning about electromagnetic induction and energy transformation in STEM programs. Perfect for physics classroom demonstrations, science project, or laboratory experiments requiring interactive visualization of electricity generation processes. Equipped with powerful neodymium magnets to maintain consistent magnetic fields, this portable generator model delivers accurate experimental results for studying the principles of electromagnetic power generation. Specifications: Component: Metal, Wood, Plastic, Magnet Color: As picture shown Size: Approx. 29x18x21cm/11.42x7.09x8.27in Weight: Approx. 2410g Package Includes: 1Piece Hand Cranked Generator Model note: 1.Please allow 0-1cm error due to manual measurement. Be sure you donot mind before bid. 2.Due to difference between different monitors, the picture may not reflect the actual color