Your child s creativity will take off with these exciting building blocks that incorporate LED lights. This fun set includes everything you need to build four different types of helicopters or you can use your imagination to build a unique design. Laser pegs light up your child's creativity by adding bright, colorful light to their favorite building toys. The complete helicopter kit includes mobile power base, 3 button cell batteries, 2 LED blocks and 45 clear construction blocks. Plastic and... Includes Mobile Power Base, 2 Laser Pegs, 45 Construction Bricks, Instruction Manual 100% Compatible with Other Major Construction Kits Batteries Included