Building blocks that glow! This Creative 30-PIece Set contains blocks that are compatible with Duplo® size bricks. The Creative Sets are unique because they contain more sizes and colors to allow more building choices. Creative 30 Set includes: 30 bricks (16 of the 4-peg size, 7 of the 6-peg size and 7 of the 8-peg size), in 8 colors, 1 USB Smart Base, 1 USB to DC cable and 3 AAA batteries. Generations have been playing with construction toys, and toy bricks have never been more popular. Now the play experience can be enhanced with Light Stax! Build with light and light up your creations. Each brick lights up when connected to a power source since each one has its own LED. There are 3 light modes: instant on, flashing and glowing. Lights can be set to stay on or 15-minute auto off. Fully compatible with other building blocks of similar size. For ages 3 years old and up.