Electric Gears Science Project Toys
Suitable age: over 5 years old
Product size: 14*6*3 cm (5.11*2.36*1.18 inches）
Features: the car can move back and forth..
Principle: The chemical energy in the battery convert into kinetic energy of the motor, the motor drives the driving gear to move. When the driving gear is on the ground, the car is moving forward along with the driving gear. and when the driven gear is on the ground and meshed with the driving gear, the driven gear can follow the rotation and the rotation direction is opposite to the driving gear so as to achieve the reverse direction movement of the car.
the price is for 1 set. The batteries are not included.