Build 3D circuits into your structures without wires! Conductive tin plated parts are used to create 3D circuits from the battery pack to the LEDs to integrate lights into your structures.

• Directly compatible with other brick building construction sets
• Contains 45 unique, patented parts including 10 LEDs you won't find in any other toy brick set
• Patented technology enables you to build 3D circuits into your structure with no wires!
• STEAM product that teaches how to build 3D series and parallel circuits to light your imaginative creations
• Online instructions show you how to build a cat whose fur lights up red, blue or green and can even flash on and off or continuously change colors!