Circuit Blox BYO ECO Fidget Lights
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!