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 you structures.

• Patented technology enables you to build 3D circuits into your structure with no wires!
• Directly compatible with other brick building construction sets
• TEAM product that teaches how to build 3D series and parallel circuits to light your imaginative creations
• Online instructions show you how to build a mermaid whose crown lights up red, blue or green
• Contains 104 parts (40 unique, patented parts including 8 LEDs you won't find in any other toy brick set)