• Follow The Trail Vehicle Toy with built-in in optical sensor follows any line on paper automatically
• Draw your line in any pattern and watch your tank follow the path given
• Use an ordinary dark colored crayon or marker to draw the line
• Line must be at least 0.2" / 5mm thick
• When the line ends, the toy will continue on in the same direction
• Powered by 4 x LR44 button batteries (included)
• Package includes 1 tank car, 1 magic pen, an instruction manual, a paper with pre-drawn black line
• Measurement: 2.76" x 1.77" x 1.57" / 7.02 cm x 4.5 cm x 4 cm
• Random color will be sent.
• Available in various designs.

Simply draw a thick line on white paper, then place the Follow The Trail Vehicle Toy on the drawn line and it will follow the path automatically. The vehicle has a built-in optical sensor that reads the black line. Put a few of these toys on the track and watch them collide or go about their separate ways.