Mashimaro Gear Building Toy Set This product is suitable for children over three years of age, it is fun to play, very suitable for the development of children's brain! 81 pieces of Jigsaw Puzzle Children's puzzle toys Use battery: 5 quarter 1 battery (not with battery) Electric Building Blocks DIY 81 pieces of Jigsaw Puzzle Children's puzzle toys this blocks can have hundreds of spelling can be unlimited play baby's imagination and practical ability, and can well promote the communication between the baby and parents, building blocks are electric Oh, to a gear can be driven all the building blocks, to whole block rotation and run!