DECORATIVE LIGHTS - 7 different colors of neon magic design. Each piece is a unique color. LED light turns on when the pieces are stacked together; the light turns off when take it apart. COMBINATIONS & DIY TOY - The magic block can be assembled interlock led module arbitrarily. An awesome decorative lamp, as well as a good toy for Tetris fans and children. You can DIY decor for your lights, assembled into different shapes. BEST GIFT FOR FRIENDS & FAMILY - It would the perfect decor light for your home. Ideal Gift for birthday Valentine's Day Halloween and Christmas decorations and so on. AUTOMATIC LIGHTING - When the block lamps are stacked together, the led lighting; When the block disassembly, the light turn off. As long as the main block is connected to power/turn on, other blocks can be lighting when accumulate. ENVIRONMENTAL PROTECTION MATERIAL - High quality ABS material. The packing consists of 7 interlocking lamps and a cable. 100% Money Back Guarantee. We provide the best after-sales service, any questions please feel free to contact us.