Features 1、A novel inductive toy that follows the marking line to move, make children have fun. 2、The products include battery slot, light sensor, switch for pen follow car, rear wheel power, pen follow car is powered by two rear wheels. 3、It is easy to install the battery. Use a cross screwdriver to unscrew the battery slot screw, insert the button battery (installed according to the positive and negative poles), and push to the switch on. 4、Multiple types of induction toys are optional, you can choose according to preference. 5、Made of high quality plastic material, safe and eco‑friendly, firm and durable. Specification Condition: 100% Brand New Item Type: Induction Draw Line Toy Material: Plastic Applicable Age: More than three years old Battery: Model LR44 x 4, 3.6V, 160mAh (built-in) Optional Type: Tank, engineering vehicle, robot Package List 1 x Robot 1 x Paper 1 x Marker 4 x Button Battery 1 x Manual