Products Name: Kids DIY Electric Project Kits Robot Construction Sets Worm Educational Science Toys STEM School Boys Birthday Gift
Material: wood
Product size: 10*12*5 cm (3.94*4.72*1.97 inches)
Suitable age: over 5 years old
Principle: The chemistry energy in the battery converts into kinetic energy of the motor,which drives the yellow wheel to move.
Note: The price is for 1 set. The batteries are not included.