STEM-Focused magnetic building: build multiple remote controlled vehicles and watch them go! Patented Double-Locking System for Ultimate Safety: GeoSmart is a leading innovator in magnetic toy safety. Create your own cool buggy, switch on the light and start exploring! Includes 21 Colorful, Geometric Pieces including a 6 color LED light to help build creativity and motors skills while having fun. Requires 1 AAA battery (not included).