Stackable Interlocking Induction Light: The novelty night light consists of 7 tangram blocks in colors and a cable that, when properly stacked, lights up when the blocks in your hand touch a blue square with a power source. If you remove the block from your hand, it will go out. This funny way of lighting is sure to impress retro classic games, jigsaw puzzles, stacking games and game room lovers. We provide you with USB power or us plug power 2 different lights to choose from.,DIY Your Exclusive LED Lights: 7 block can be assembled into thousands of shapes. Perfect for children to build these blocks immersed, more focused, creative and imaginative. If stacked with 2 sets of night lights (8-14 blocks) will be more intresting (note: please do not stack length or height is too long, the interlocking induction lighting effect will be poor). his is very simple for puzzle, tangram, square lovers, but its decorative and night light role will surprise you.,Multi-use Novelty Decor Lights: tangrams night lights can be used as daily indoor living room, bedroom night lights, creative puzzles, teen room decoration, souvenirs for classic game enthusiasts, game room accessories player decoration, desktop decorative lights, special elderly hand mental exercise tools. A cool light that can do anything. It is definitely a birthday, Children's Day, Valentine's Day, Thanksgiving, Halloween, Christmas gift decorative light.,Durable ABS Material: The made of high-quality ABS transparent film, high-light LED lamp beads, each square lamp has a silver edge wrap, looking more exquisite.,Usage Instructions: The working principle of this puzzle lamp is to stack the 2 adjacent squares together, then light up after ordinary contact, rather than magnetic link, please do not shake the table violently to avoid the combination of squares falling off. Don't worry too much about whether the link between the blocks will be unstable, which can meet your normal use. Designed to be easy for people of all ages to stack, safer and more user-friendly.