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Use the hand crank to generate electricity and light the three LEDs! Learn about polarity and see what happens when you turn the crank in either direction.
• Instruction sheet included
• 7 total pieces
• Build 7 projects
• Includes three (3) LEDs - Heart (red), Star (blue),
and Blue/Red Bi-Directional
• An excellent introduction to Green Energy
• Compatible with other toy brick sets
• No batteries required!
