DIY Wooden Science Experiment Hand Generator Puzzle Toy(Hand Generator)

1. Material: wood
2. Applicable age: over 8 years old
3. Product principle: drive the generator to rotate through the hand-cranked large disc to realize the output of electric energy to light the bulb
4. Product features: interesting scientific and educational toys, exercise hands-on ability
5. Extended hand crank, easy and labor-saving rotation
6. Red wheel fixed, balance device
7. Wire perforation design, standard and neat
8. Product size: 16 x 12.5 x 8.5 cm
9. Note: Self-assembly is required, and instructions are provided!