Hand generator technology small production scientific experiment small invention physical children’s toy diy

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$1.99

Size: 90*75mm
Product name: hand crank generator
Subjects: Physics, Magnetism, Electricity
Principle: Mechanical energy and magnetic energy are converted into electrical energy
Material: plastic accessories, wire and electronic accessories
Purpose: Cultivate and exercise children’s scientific awareness and manual and brain skills. It can also be used as a teaching model, classroom, after-school homework, and school production competitions.

SKU: SNP99 Category:
Weight0.07 kg

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