Principle: the coil is energized to
generate a magnetic field, and the same sex repels each other. When the
magnets adsorbed on both ends of the battery enter the coil, a magnetic
field is generated in the coil, which attracts and repels with the
electromagnet, and the battery can move quickly. Package included:1 coil {Color random} 1 battery 4 magnets with box It
contains a small magnet. Please do not swallow it. Please use it under
the guidance of your parents. Not suitable for children under 3 years
old
Suitable for children over 6 years old
Material: Copper
Dear Buyer,
Thanks for your support. Due to the outbreak, the arrival time of the goods may be delayed. Sorry, please understand, thank you!