LED lighted construction set comes with everything you need to build limitless designs, including a toy butterfly, forest fairy, goldfish, alien, snail and more. Open-ended building toy encourages kids to use their imaginations and build whatever they want. Laser Pegs pieces are compatible with other major building block sets, so you can add colorful light to your favorite creative toys. The Butterfly kit includes a triangle power base. Just pop in 3 AAA batteries or attach an AC adaptor and you're ready to create lit-up models with 20 lighted pieces and 68 clear construction parts. Laser Pegs is the only construction system that lets you build with light, revolutionizing the toy building block arena. A melding of Lite-Brite and Lego, this unique children's toy lights up by using long-lasting, high-quality LED lights inside building blocks. Laser Pegs pieces are 100% recyclable for an environmentally friendly toy your kids will love. Ages 5 and up.