Tese circuit blocks help kids learn basics about electronics and have fun at the same time. They come in 3 sets to choose from, 19, 34 and 41 pieces that include up to 120 different projects to start building. The blocks are also compatible with LEGO Duplo so you can easily extend your creations.
Packing: Original package box
Batteries: 3 pcs AA batteries (not included)
Material: Nontoxic ABS plastic and electronic parts