Includes all the pieces kids need to build a Deluxe Base Station with a Towers, Spinning Diner Sign, Planetarium with color-changing dome light, Voice Synthesizer Station with. 10 space sounds, Communication Station with rotating Radar Dish, a Powered Space Rover and a freewheeling Space Rover both with light-up headlights. Also includes six astronauts and two robot figures for pretend play and stickers for customization. Collect multiple Circuit Explorer sets to build your system with interchangeable pieces and power sources. STEM learning system provides positive, hands-on experience with key engineering and design principles. Base, Dome Light, Voice Synthesizer, Communication Station, and Space Rovers require 3 AAA batteries each. Ages 6 and up.