This kit provides hours of fun and educational play. Build 120 different 3D circuits that teach STEM. Light a star, spin a motor to launch a fan high in the air, play music, sirens and space battle sounds, and even build your own FM radio!Details:49 piecesRequires 3 AA batteries (sold separately)Directly compatible with other brick building construction setsLEDs and generator workFor ages 8 and upContents:49 colorful building piecesBattery moduleSwitchesLEDsGeneratorMotorSpeakerIC sound moduleAmplifier or FM receiverBaseplate