Battery : No.
No of Pieces : 14
It's called Keys Of Learning. Great for developing motor skills, hand eye coordination, etc Colored shaped blocks fit into like shaped cut outs on the top of the base. Each key is colored to match the colors of the shaped blocks. Each unique key fits fit into corresponding holes. If you turn the key, the shape pops up. The blocks fit into the square in the top and the keys can be stored in the well on the side. In excellent condition with all keys and blocks included.