Follow Any Drawn Line Magic Pen Inductive Robot Model Children Kids Toy Gift Feature: 100% brand new and high quality. Quantity:1PC This is a novelty inductive car which follows the marker line like magic. If you place the Inductive car somewhere else it would run in circles until it finds the line. The Toy has an optical sensor that reads the black line drawn on a white piece of paper. The car is powered by 4 x AG 13 button cell. Marker pen included The line thickness should not under 4mm and not overrun 10mm Non sharp-angled line Will make Perfect gift for your little child How to play: Use an ordinary dark coloured crayon or marker to draw a line on a white piece of paper Turn on switch on the button of the car Place car on top of the drawn line The robot will run on the line automatically If the line finishes the vehicle will continue in the direction followed from the previous line If the line is too thin the vehicle may stray off the line please make the line thicker (The line should be a quarter inch in thickness ) Package Content: 1 x robot 1 x Magic pen