Build 3D circuits 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
• 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 wall, castle, or mosaic that all flash in crazy red, blue, and green patterns.
• Contains 135 unique, patented parts including 50 LEDs you won't find in any other toy brick set