This set includes one AA battery box (8881), one medium motor (8883), one switch (8869), one light wire (8870), and five technical components (random colors). A built-in control switch allows you to change the motor's direction with a simple flip of the switch or lever. The battery box can simultaneously power two extra-large motors or four medium motors (not included). Requires six AA (1.5V) batteries (not included). Illuminate your creations with the light wire. Compatible with electric toy cars with building blocks. Perfect for building cars, electric models, and other technical creations. Take your creativity to the next level.