About This Magnetic Fun: This set includes 4 magnetic cubes with built-in LED lights. Kids can easily connect these magnet blocks and combine them with other building toys to create houses, castles, or imaginative characters. Great for early STEM learning and hands-on fun LED Sensory Night Light Cubes: Great for creating a peaceful environment, each LED cube emits a gentle single-color glow that serves as an ideal night light or sensory toy, with easy switch control and an impressive 48-72 hours of continuous operation Replaceable Battery Design: Powered by low-voltage batteries (included) and safely replaceable by parents, these cubes offer long-term fun. Sustainable and reusable building toy solution Unique Light-Up Designs: Fun patterns like pumpkin monsters, magic crystals, and more come alive with light. An ideal gift that combines creativity, visuals, and imaginative play Travel-Friendly and Versatile: Compact, portable travel toy great for trips, home play, or parties. Combine with other sets for creative lighting decorations and group fun