Retro toy! The flywheel lights up when it spins very fast, and it also produces sounds. You do this by pulling the strings on the left and right. This old-fashioned toy explains the phenomenon behind it. When the strings are loosened, energy is transferred through muscle power. The strings store this energy as potential energy; when they are tightened, the strings relax and transfer the energy to the wheel, causing it to light up. Comes with two button cell batteries. Available in 4 colors.
Product information:
Dimensions: 40 cm x 7 cm
age: from 3 years
