Fantastic Smart Car Robot Electronic DIY Kit

Features:
With a 16 mm wide black runway in the white field and support driving along the black runway automatically.
The car can be driven automatically in spite of how the runway is bent. 
Use red light source and the light is reflected through the ground to the photoresistor.
Practicing the intelligence of children.
Cost-Effective. Get a tracking line smart car kit with only a little money. 

Specification:
Material: Plastic & Metal
Package size: 14.7 * 10 * 4cm / 5.79 * 3.94 * 1.57in(L * W * H)
Package weight: 129g / 4.55oz

Package list:
1 * Tracking Line Smart Car Kit 
1 * User Manual